Dave Matthews has pulled out of Thursday's FireAid benefit and Friday's MusiCares Persons of the Year tribute to the Grateful Dead.
A note on the Dave Matthews Band Instagram says he can't perform "due to a critical illness in the family," but doesn't offer any more details.
Matthews was set to perform with John Mayer at Fire Aid, who will now do a solo set. The MusiCares Persons of the Year lineup includes Noah Kahan, The War on Drugs, Vampire Weekend and My Morning Jacket.