Mitski and Beastie Boys appeared on “Jimmy Kimmel Live!” last night. Ad-Rock and Mike D from Beastie Boys discussed with Kimmel about their new memoir, Beastie Boys Book, their career, the late Adam Yauch, their relationship with Kool Moe Dee, and more. Mitski, the night’s musical guest, performed Be the Cowboy tracks “Two Slow Dancers” and “Nobody.” Watch it all below.