https://acousticbrainz.org/similarity/d17e53d3-6995-43a6-a2fd-f526a4b691f1/moods?n=0 has "Spyro Gyra - Escape Hatch" listed multiple times for various different submissions of the same. While the individual submissions’ similarity can absolutely be of interest (e.g., to check for wrongly merged submissions or other more nerdy things), it is likely not the most interesting if used for music discovery/recommendation purposes.