M.A.S.S. are now called Hey Gravity!...
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M.A.S.S. has had 9 concerts.
M.A.S.S. is most often considered to be Rock, Indie, Classic Rock, Indie Pop, Guitar, Indie Garage Rock, and Buffalo Ny Indie.
The last M.A.S.S. concert was on December 05, 2023 at The Empty Bottle in Chicago, Illinois, United States. The bands that performed were: Mandy, Indiana / M.A.S.S..
