I know one interesting report, by Zoltan Dienes, that appeared in the Journal of Mathematical Behavior, a professional math ed journal that your library should be able to get for you, if they don't already have it:
Dienes, Zoltan P., (1987). Lessons Involving Music, Language, and Mathematics. Journal of Mathematical Behavior, vol. 6, number 2 (August, 1987), pages 171 - 182.
JMB is available from Ablex Publishing Corp., 355 Chestnut Street, Norwood, NJ 07648