I own a few Music Minus one play-alongs. A clarinet one that has the Stamitz concerto on it, and the one that has the Bolling Suite for flute, and the one that has J.S. Bach Suite No. 2 on it. Those are excellent.
I tried out one called “Baroque Play-Along for Tenor Saxophone”. Yikes. Terrible. The mixing is terrible, and the Tenor player misses a low E the 12th measure of the Pachelbel Cannon (the EASY PART).
Avoid this one people. I’d say use Smart Music for those songs rather than MMO.