Phillips, who was unvaccinated, appeared on the NBC reality competition twice, in Season 4 and Season 12. He was best known for his big hair and performing with a keyboard strapped around his neck. "It is with great sadness we inform you all of the loss of our bandmate/brother/and friend @jayjayrocks," his band Mettal Maffia wrote on Instagram. "It still doesn’t feel real and we would give anything to change it. Please respect the family, as well as our wishes as we take our time to grieve and process this detrimental loss."