Annotated Listening presentation
I've chosen to explore manipulation of time as a subject, and picked three examples.
The first is Leif Inge's 9 Beet Stretch, consisting of Beethoven's 9th Symphony stretched out to play over 24 hours, and pitch-shifted to restore the original sound. Stretching the sound out this way focuses attention on timbre, and perceiving the rhythmic structure of the original piece requires some concentrated effort!
The second is a 30 minute chanted version of "Om Nama Shivaya", a Hindu religious song perfomed at a very slow speed. In contrast to the first example, I have sped it up 4x and corrected the pitch as well. In a reverse of the first example, rhythmic elements now predominate over the gradually evolving tones of the original version.
Finally, I will reference Marcus Coate's Dawn Chorus, an attempt to simulate birdsong with human singers. A variety of bird calls were recorded, and slowed down to 1/16th of their normal speed. These tones were then sung by a group of human singers, and the resulting video sped up 16x, to restore the original pitch.