Image from Discogs
There are multiple artists using the name Mmm.
1} mmm is a Japanese singer/songwriter / shibuya-kei artist
2) Mmm is a Norwegian electropop duo (Ida Eline Tangen & Johanne Isefiær McDougall)
3) MMM is the collaboration of Fiedel and Errorsmith
4) MMM (read as "triple M") is a member of stillichimiya
5) MMM (Miami Music Management) is a producer team. MMM's roster includes: Hardbody B-Eazy, DJ Trebble, EJ Grimes, Six7, xFyle, & Silc.
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Artist biography from last.fm