"Gotta Work" is a song by American R&B singer-songwriter Amerie, and is the second international single from her third studio album, "Because I Love It" (2007). It samples Sam & Dave's 1966 song "Hold On, I'm Comin'", written by Isaac Hayes and David Porter and originally recorded by Reuben Wilson. The sample used is from a cover version by Erma Franklin, off her album 'Soul Sister' (1969). Amerie called the sound of the song "'go-go soul'", saying go-go "like really strong black coffee, some people can't ingest it in its purest form."