Three Days Grace has announced that My Darkest Days Singer Matt Walst is now the lead singer in the band.  He replaced singer Adam Gontier after he left late 2012.  Matt filled in for the bands live shows over the last year and is now the full time singer.   They are now getting ready to release new music and the first single from their upcoming album is out the song is called "Painkiller" what do you think?

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