From brew's sound map
brew listens to the music itself - these are the tracks sitting closest to 6 Pieces, Op. 19: Nocturno, Op. 19, No. 4 by Piotr Ilyich Tchaikovsky, placed by sound alone. Tap any to hear it.
This is one map. Your Spotify library is a shape on it.
Or put Piotr Ilyich Tchaikovsky in the studio with the you your Spotify knows.