http://www.astrocappella.com/activities/
"Meet the Neighbors: Planets Around Nearby Stars" is an AstroCappella lesson plan to accompany their song "Dance of the Planets."  High school students investigate the dimming caused by a transit; determine a planet's radius and orbital distance from transit data; and compare results of the extrasolar planetary system with our solar system; ( PDF file).

The Bovaco Catalog carries John Philip Sousa's Transit of Venus March band arrangement.  The march costs $25.00 (plus UPS shipping) for a reprint of each published part on 8.5 x 11-inch pages.  You may reproduce as many copies for your own use as necessary.  You may call them at (480) 948-9870 or write them at The Detroit Concert Band, Inc., 7443 East Butherus, Suite 100, Scottsdale, AZ 85260.

http://www.jwpepper.com/6385611.item
JW Pepper sells the band set and score for Sousa's Transit of Venus March.

http://transitofvenusproject.com/
Transit of Venus Project is self-described as "Some kind of Glam Indie Pop Rock thing."  In production (as of August 2010) is new album that features LeGentil and fictional account of his wife.