A lot of Americas most important music was recorded in a one-story studio that sat in a Richmond river gorge. The records from those sessions have continued to reverberate for almost a century, influencing Nat King Cole, John Coltrane, Pete Seeger and countless others. But those who study Gennett have found that many still dont know how important the Richmond studio is to the history of jazz, blues, gospel and popular music. The Gennett studio building exists only in photos and record grooves now, but the Indiana Historical Society is drawing together these threads with You Are There 1927: Gennett Studio. The exhibit, which reopened Tuesday, re-creates the recording room and shows photos of musicians and documents like Carmichaels recording contract.