Found your page, and loved the idea.
Got the sequence (Longevity) and decided on D# for the T replacement.
On a whim I decided to limit this piece to piano, choir and cello.
Did a rough conversion to MIDI (Using ABC Convert-A-Matic).
Imported the MIDI file in Reason and messed around for a couple of hours. The result is attached
The DNA sequence runs along in the piano voice and the choir and cellos do variations. I Liked the sound of the sequence, so I kept it intact. Except for the prelude, which is a repetition of the first part of the sequence.