Showing posts with label pattern. Show all posts
Showing posts with label pattern. Show all posts

Sunday, April 2, 2017

Ostinatos; making a lot from a little (2. Rite of Spring)

Further to my previous blog entry
If the 339 consecutive repetitions of a 2-bar rhythmic ostinato pattern in Ravel's Boléro (1928) don't constitute overuse of an idea, then what does?

Or, to rephrase the question in a less acerbic way, Ravel's Boléro is his most popular work (according to Wikipedia), yet from start to finish it repeats a 2-bar rhythmic pattern without change or interruption; how does Boléro maintain our interest? Why are most listeners not bored, troubled, or driven mad by the 339 incessant repetitions of this ostinato rhythm?

The explanation is that there are other musical aspects that change and evolve continuously throughout the work, and these are what sustain our interest, such as: 
  1. It begins almost inaudibly (so quietly that, when I worked as a record department sales clerk as a student, many people who purchased the album tried to return it, thinking there was something wrong with the audio), and grows steadily and inexorably over its 15-16 minute length to become as loud as possible at the end; it is a study in how to write an extraordinarily-long crescendo for orchestra
  2. As such, it is a masterpiece of orchestration, filled from start to finish with colour and texture changes that reflect Ravel's brilliance as an orchestrator. The two-part theme is repeated many times, but each presentation uses a different orchestration (and hence a different colour), and the orchestration also changes within thematic presentations as well.
  3. Its form is essentially a theme and variations, and just as in the best examples of this form, our interest is sustained by hearing many permutations of the main theme, instead of becoming annoyed that a given theme is played over and over again. The unusual aspect in Boléro is that the pitch content of the theme is never varied (except for a modulation in the final 40 seconds), just the colour (orchestration and texture) and dynamics. 
  • This idea is not original to Ravel, however; another mono-thematic work that begins quietly and, over the course of multiple thematic repetitions, eventually becomes very loud, is Grieg's "In the Hall of the Mountain King," from Peer Gynt (1875), composed 53 years earlier.
If Boléro consisted only of 339 repetitions of a short idea, and nothing else, I'll go out on a limb and speculate that the composition would be less popular.  😄

Or perhaps it would have become celebrated as the grand-daddy of minimalism… 😴



Igor Stravinsky: The Rite of Spring
Igor Stravinsky's The Rite of Spring (1913) makes extensive use of ostinati, and, more generally, repetitive elements, so today we will look at some of the ways Stravinsky used one particular ostinato, the repeated four-16th-note idea in the excerpt below.

It is introduced at the end of the first section (Introduction) of Part 1, played by pizzicato violins, while a clarinet sustains a lengthy trill (this is at about the 3-minute mark in the YouTube video at the end of this post; all other timings indicated below refer to this video):


It is a pretty simple idea by itself, but its simplicity makes it useful, because it works well with many other ideas. Therein lies one of the keys to writing a good, multi-purpose, ostinato: While good music can be written with longer and more complex ostinati, a short, simple idea is probably more flexible, because it can support a variety of other ideas.

The above excerpt introduces the ostinato somewhat hesitantly, instead of introducing the idea and immediately continuing with almost incessant repetitions, as we found (see previous post) in Boléro. Stravinsky is saving more regular repetitions of this idea for the next section. He is "planting a seed," giving us a taste of an idea that will become increasingly prominent and repetitive.

Sure enough, about 10 seconds later, he gives us a somewhat longer version of the ostinato, which leads to the strongly-rhythmic bitonal (E (enh.) in the lower strings, Eb7 in the upper strings) chord repetitions that are one of this work's most memorable features, which mark the start of the next section, Augers of Spring/Dances of the Young Girls. This starts at 3:20 in the video below:


Incidentally, for those interested in "golden mean" ratios, note that in its first three presentations, the ostinato is heard twice, once, (thus three times so far), and Five times, adding up to eight times, all of which are numbers in the Fibonacci series (1, 2, 3, 5, 8…). Sadly, the next time we hear the idea (see excerpt below) it is only presented four times, which is not a Fibonacci number. 😢 It is used eighteen times consecutively the time after that (part of which is two excerpts below), and this too is not a Fibonacci number. 😭 This is a work clearly in need of a revision! 😎 [Okay, I promise to insert no more emoticons in today's post. The are very useful, though…]
Very soon after the previous excerpt, at about 3:35 in the video below, the heavily-accented repeated chords are interrupted, and we hear the first presentation of the ostinato figure with counterpoint, consisting of an arpeggiated chord in the bassoons, which is itself repeated. Notice that the bitonality continues, this time between the ostinato (Eb7) and the counterpoint below it (E enh.):



This next excerpt, which starts at about 3:45 of the video, gives us another melody, once again with repetitive elements, this time above the ostinato. Note the frequent colour changes in Stravinsky's orchestration of the melody; the reduction below does not accurately reflect this, but there are 6 colour changes to the melody in 6 bars. When you listen to the full orchestra version (in the video below), note as well that the ostinato at this point is buried in the texture, almost inaudible within the heavily accented chord repetitions (not shown in this example, but the chords are the same as in the last 2 bars of the previous example):



New melodic fragments are superimposed on the 4-note ostinato over the two minutes that follow the previous excerpt, one of which is this one, which is again repetitive, and occurs at about 5:25 of the video:



Please suggest other works that make prominent use of ostinati – one such piece is Stravinsky's, L'Histoire du Soldat – and I will possibly (see explanation at the end of this post) discuss them in future blogs… At the very least, I can compile a list with your suggestions. If you can, try to be specific about where the ostinati occur within the work you are citing. In the mean-time, I already have an idea for a third post in this series.



Below is a recording of The Rite of Spring on a video that shows the score. Try to find other uses of the ostinato discussed above. As well, try to listen to it more than once, in order to find other ostinati, and the degree to which repetition of musical ideas is used. If you don't have enough time to hear the entire piece, listen to at least the first 6 minutes; all of the above examples occur within that time.



Explanation of my use of the word "possibly" with regards to doing more blogs on this topic:

My only hesitation is that the amount of time involved doing a post such as this one is daunting. It involved making score reductions in Finale of the sections I wanted to use as examples, saving them as GIFs and importing them into this blog, recording the musical examples, importing them into Audacity and splicing them into sections that corresponded with the notated examples, saving them in two different audio formats (MP3 and OGG) because not all web browsers read MP3s, uploading the audio files to my website, and then inserting the code that lets the Blogger website read and play audio files on all major web browsers. Plus the time spent fixing things that didn't work along the way. Not complaining, mind you! I enjoy doing this, but it is time consuming.

That said, and to repeat what I wrote above, I do have another post in the works on this topic, so there will be at least three in the series, and possibly more if people make suggestions regarding other works with prominent use of ostinati.

Thursday, March 30, 2017

Ostinatos; making a lot from a little (1. Boléro)

An ostinato is a musical idea that repeats immediately (as opposed to returning later in the composition) and persistently (it usually is repeated more than once). It can be melodic or rhythmic, and is usually fairly short – one to four bars – but it can be longer. Kids love 'em.

And not just kids; it is widely used in many musical styles and periods.

The attractiveness of ostinati for composers is easy to understand; you can generate a lot of material from a relatively short musical idea, and, if you do it well, audiences may respond well to the music.

With the advent of computer-notation software, and, more specifically, the "copy" and "paste" commands in those programmes, it has become extremely easy to use ostinati in compositions. And, with programmes like GarageBand, which comes bundled with every Mac computer, you don't even need any musical knowledge to write loop-based music; in this context, "loop" and ostinato mean the same thing.

The downside of repetition, however, is that too much can make a composition overly predictable, unless the composer finds ways of varying, interrupting, growing, evolving, or otherwise adding interest to repeated patterns; music that is overly predictable can lose the listener's interest.

An example of how to successfully repeat an idea to an almost absurd degree is Ravel's Boléro. It uses the two-bar rhythmic ostinato figure below throughout the work; this two-bar rhythmic unit never stops repeating until the work's (very loud) conclusion, about sixteen minutes later:


There is even further repetition within this two-bar ostinato: The rhythm on beat one is used on the first two beats of each bar; four of the ostinato's six beats are identical. This is repetitiveness ad absurdum, and I won't stand for it!!! [Just kidding, of course; the piece is awesome.]

The above pattern is repeated 339 consecutive times in Boléro (yup, I counted), which means that the rhythm on beats one and two of each bar is heard 1,356 times.

That's a lot of repetition!

One can argue that the uninterrupted repetition of the same short rhythm for sixteen minutes in a composition is a bit much – or a lot much – but Boléro is Ravel's most popular piece, so clearly, millions of people have no issue with it. Indeed, its popularity may in part be due to this rhythmic ostinato!

So, the question I have for you is this: What makes it work? What does Ravel do to keep our interest despite the 339 ostinato repetitions? Why do audiences cheer enthusiastically following the conclusion of the work, rather like sports fans cheering an exciting overtime win by their favorite team, instead of standing up to boo the repetitiveness?

I once listened to a radio documentary on Ravel's Boléro in which orchestral musicians were asked to give their thoughts on the work. Many said that they don't look forward to performing it because they perform it so often, there is such a high degree of repetitiveness, and, in some cases, once the piece starts they have to wait an extremely long time before they get any notes to play. However, once  rehearsals begin, they gradually feel their resistance melting and become ensnared by the hypnotic power and beauty of the work, to the point where they feel like standing up and cheering along with the audience after reaching the triumphant final chord.

Please share your thoughts in the comments section below.

Here's a performance of Boléro, conducted by an unshaven man with a toothpick instead of a baton,  if you wish to have a listen: