Moacir Santos (1924–2006) was a Brazilian composer, multi-instrumentalist and music educator. Baden Powell de Aquino and Wilson das Neves both studied under him. As a composer, Santos worked with Nara Leão, Roberto Menescal, Sérgio Mendes and Lynda Laurence, among others.
Even though the collaboration between Livingston & Evans and Moacir Santos was short, it proved to be a successful one. Besides April Child (which appeared on Santos’ 1972 release Maestro), they also wrote What’s My Name, Luanne (aka Sou Eu), which also appeared on Maestro, and Kathy.