Sonny & Cher's all-encompassing partnership made for pop gold, with Sonny's raspy voice playing the foil to Cher's impassioned, rich alto. The ‘til-death devotional “I Got You Babe” is a love song for the ages, a waltzing celebration of love's optimism. Bono's songwriting could capture ardor's many facets—“But You're Mine” is a swinging ode to how love helps people be their best selves, while “Baby Don't Go” is all longing and sighs—and just as easily craft a psych-tinged anthem about the relentless march of time (“The Beat Goes On”). The music the duo made between the mid-'60s and the mid-'70s remains crucial to pop's canon.