“Luther,” whose title honors late R&B great Luther Vandross (who is also sampled on the song), became Lamar’s sixth Hot 100 No. 1 and SZA’s third.

From Luther Vandross (“Dance With My Father”) to Kendrick Lamar (“Father Time”) to Will Smith (“Just the Two of Us”), we’ve got you covered.

Lamar's duet with SZA samples Luther Vandross' 1982 hit "If This World Were Mine." The song was written by Marvin Gaye, who himself recorded it in 1967 as a duet with Tammi Terrell.