Publisher Desc.  Tuning reference-tone (a'=443Hz). PLAY IT 'play-along' CDs offer the accompaniment in at least 3 tempi--one at full tempo, others at slower practice tempi--providing every musician, regardless of ability, with an exciting and dependable chamber music experience. Accompaniments are realized with either a concert grand piano, harpsichord, continuo ensemble or virtual orchestra. PLEASE NOTE: Sheet music is not included. Matching edition: EP 9096.