Zach Galifianakis is of course best known for his comedic prowess, but while he makes his living on the big screen, the 47-year-old actor/comedian also likes to dabble in the music business, at least for this particular clip, anyway.

John Legend and Annie Clark, more commonly referred to as St. Vincent, have in turn been chosen to participate in a promotional video for a series of vinyl records benefiting Planned Parenthood, called 7-Inches for Planned Parenthood. While attempting a cover of Minnie Riperton's '70s hit "Lovin' You," Galifianakis then showed up to provide Legend and Clark with some pointers.

According to Galifianakis, the two famed musicians just couldn't get it right, though. He suggested alternating the la la's, changing keys, and even adding an accordion to the mix.

To see how the session unfolded, press play above.

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