Rehearsal Arts, a Westport home-based Internet sales company, has sold over 21,000 copies of the Choral Learning CDs that the company produces and publishes. The CD collection has become a highly respected learning tool for chorus singers who want to improve their performance. The company, which has been in business since 2005, has a large repertoire of major classical choral music for both altos and tenors. One of Rehearsal Arts' specialized learning techniques is to keep the pitch of a song but slow the tempo between 10% and 25% for easier learning. The company's CDs have also been used as a teaching tool by the Berkshire Choral Festival in Sheffield, Massachusetts. For additional information or to place an order, visit the Rehearsal Arts Web site.