Watch a promo featuring John Legend, St. Vincent and Zach Galifianakis.

Björk, Bon Iver and Mary J. Blige are some of the artists joining 7-Inches For Planned Parenthood, a star-studded charity series to raise money for the women’s healthcare organization, Pitchfork reports.

They join other newly announced musicians including Sleater-Kinney, Mitski, The National’s Matt Berninger and Bryce Dessner, Common, Feist, Laurie Anderson, Jon Brion, Foo Fighters, Hisham Bharoocha and Nico Muhly. Other collaborators listed include acclaimed sci-fi writer Margaret Atwood, comedians Jenny Slate, Janeane Garofalo, Pete Holmes and Tig Notaro, as well as the late singer/songwriter Elliott Smith.

Previously teased collaborators John Legend, St. Vincent and Zach Galifianakis released a new video today promoting the series. The clip involves the two singers attempting to cover Minnie Riperton’s classic ‘Lovin’ You’ with constant interruptions and notes from Galifianakis.

The charity will release collaborations featuring these artists over the following weeks, and true to the name, a 7″ boxset will available. Find the full collaborator list and read a statement below.