The Play Along CD presents the music in three tempos. The first thing you hear on the CD is the concert version in a first-class recording with solo instrument and orchestral, continuo or piano accompaniment. Then the piano or harpsichord accompaniment follows in slow and medium tempo for practice purposes, with the solo instrument heard softly in the background at slow tempo. Finally you can play at the original tempo to the accompaniment of an orchestra, piano, or basso continuo. All versions appearing on the CD were recorded live by renowned soloist, accompanists and/or orchestras. There are no synthesised sounds!