A fairly common practice in the Baroque era was for organists (especially the great J. S. Bach) to "borrow" and transcribe orchestral music from themselves or other composers to create spectacular organ solos. Bach adapted several works by Vivaldi. This particular transcription was originally for solo violin and string orchestra. The brilliant showy solo line interspersed with tutti sections lends itself well to a clarinet ensemble. For 5 clarinets and bass clarinet.