Trevor Stricker praised the beat-loving bear's return, saying "Saw you on the platform this morning in Harvard Square. You rocked out We Are Family. Keytar Bear==Amaze."
Fundraisers were recently set up to support the musical bear after he fell victim to two attacks, which were carried out during his street performances.
Back in March, Metro spoke with Keytar Bear during one of his performances outside of Faneuil Hall. Keytar Bear, whose true identity is unknown, said he would "probably die [stop performing] around April. Before Mother’s Day, Keytar Bear will be dead."
On Monday, Keytar Bear told WBZ NewsRadio "It feels like I'm back home again. I really missed everybody," and said he bleached the blood from his costume and has been working out in order to get in to "fighting condition."