Neil Diamond briefly came out of retirement to sing 'Sweet Caroline' at a musical celebrating his life in Los Angeles amid his Parkinson's battle.

Neil Diamond surprised fans by performing at the "A Beautiful Noise" musical seven years after he announced his retirement due to his Parkinson's diagnosis.

Good times never seemed so good. Neil Diamond made a surprise appearance at Saturday’s performance of “A Beautiful Noise: The Neil Diamond Musical” at the Pantages Theatre in Los Angeles ...

Good times never seemed so good for a delighted audience over the weekend, when Neil Diamond emerged from retirement for an impromptu sing-along.

Neil Diamond performed "Sweet Caroline" in a surprise appearance on Saturday at his namesake musical, "The Neil Diamond Musical: A Beautiful Noise," in Los Angeles.