That feature only works in the US (and maybe a few other countries?).

I've never had it work as fast or accurately as Shazam, especially in noisy environments. There's also no obvious way to get the full history of the songs I've searched for (there probably is - it's just not easily discoverable). I had high hopes for the automatic detection that rolled out on pixel 2s but have found that it only works on the terrible music that my gym plays.