Bridge Over Troubled Water (1970)

Paul Simon and Art Garfunkel achieved their commercial and artistic summit through an extraordinary balance of contrasting vocal registers. Simon's earthy, conversational baritone and rhythmic guitar phrasing provide the bedrock, while Garfunkel's soaring, angelic choirboy tenor floats into the stratosphere. On The Boxer and the magnificent title track, their voices lock together with cathedral-like resonance.