With 'Luther,' Kendrick Lamar stakes his claim as a great hip-hop ballad singer
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.

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.