The poll has closed and the final ranking is given below. Bolded entries move to the final round of vote, which I will set up tomorrow. There are 12 finalists because there are four entries tied for last place.
Movie Themes - 13
Pop Music (after 1960) - 12
Mozart - 11
Piano Transcriptions - 11
Sonatas and Sonatinas - 11
Seasons - 11
Bach - 10
Scarlatti - 10
Lyrical Music - 9
Chopin - 9
Dances - 9
Etudes - 9
Schubert - 8
Folk Music - 8
Rare Gems - 8
Duets - 7
Jazz - 7
Video Game Music - 6
Minimalism (e.g. Glass, Einaudi - 5
Great American Songbook (before 1960) - 5
Album for the Young - 5
Boogie Woogie - 5
Schumann - 4
Grieg - 4
Spiritual (including Gospel) - 4
Easy Classics to Moderns - 4
Musicals - 4
Music About Places - 4
Opera Themes - 3
Liszt - 3
Mendelssohn - 2
Calypso - 2
Polka - 1
Puccini - 0