premise: Take Two is a duet album by Motown label mates Marvin Gaye and Kim Weston, released August 25, 1966 on the Motown's Tamla label. The album was titled after its most successful selection, the Top 5 R&B/Top 20 Pop hit "It Takes Two", which was to this point Gaye's most successful duet with another singer. The album also featured the modest hit "What Good Am I Without You?".
hypothesis: It Takes Two was Marvin Gaye's most successful song.
reason: The scenario states that It Takes Two was Gaye's most successful duet to that point. He may have had a more successful solo song or later song.