St. Olaf students know a lot about music, thanks to the college's world-renowned music department and touring ensembles. But when percussionist and composer Ron George premieres "A Gull's Body" at 7 p.m. on Friday, April 12, in Urness Recital Hall, audience members not only will hear a composition never before performed - they'll also hear it played on an instrument that few, if any, have ever seen.