I have also been using #SoundSearch from the main #GoogleSearch app, it effectively replaced the #Shazam app which has become much less useful to me since #Apple bought them in 2018. It used to help me find a related youtube video but it now seems stuck in #ApplesEcosystem.
https://www.apple.com/newsroom/2018/09/apple-acquires-shazam-offering-more-ways-to-discover-and-enjoy-music/

So a song at a time I'd grab a song I was listening to on Pandora to import it to YouTube. Like just now sound search found: