"Mental content" seems way to broad for what is rather the sensorimotor part of speech.
Readit Newstrocado commented on Evolving descriptive text of mental content from human brain activity bbc.com/future/article/20... · Posted by u/ggm
trocado commented on Aviation emissions could be halved without cutting journeys theguardian.com/environme... · Posted by u/trocado
trocado commented on 2002: Last.fm and Audioscrobbler Herald the Social Web cybercultural.com/p/lastf... · Posted by u/cdrnsf
https://listenbrainz.org/ is an open source scrobbler, with the advantage that it leverages the musicbrainz database and connects listens to artist and track IDs instead of names, avoiding duplicate confusion. You can keep last.fm and submit to both of you like.