This article is a fairly good summation of why a classical app is needed. You search for classic hard rock song, Van Halen’s Eruption. You may come up with original, possible a live version, maybe a remastered version., maybe even several more. But it’s pretty precise in results. For classical do a search for one of the oldest baroque compositions, Pachelbel's Canon, you’ll see probably 75 different versions (maybe less, maybe more). Versions from orchestras and pops down to string quartets, in certain keys, maybe even famous solos. The classical app has got to be able to make search way better for this type music.