Sade channels her sultry side on “I Would Have Never Guessed,” the last of four unreleased songs included on the band’s double-disc set The Ultimate Collection, due May 3. The somber tune features the British songbird singing delicately over a lone piano melody, moaning about a love that left heartache in its wake. “I would never have guessed we’d come to this/ I know that it hurt to turn you away/ But I know all that I was wrong,” she confesses.