MED, Blu, Madlib & MF DOOM – Knock Knock – 99 BPM Categories: 2010s Workout Music, 90-99 BPM Workout Music, Hip-Hop/Rap Workout Music https://audio-ssl.itunes.apple.com/apple-assets-us-std-000001/Music3/v4/cb/97/8e/cb978ecd-e521-1fac-ddad-5a484bd8983d/mzaf_1455741213715733489.plus.aac.p.m4a Download or Stream This Song: iTunes Amazon Spotify This song contains explicit lyrics.