Matt Martians – Knock Knock – 66 BPM Categories: 2010s Workout Music, 60-69 BPM Workout Music, R&B/Soul Workout Music https://audio-ssl.itunes.apple.com/apple-assets-us-std-000001/AudioPreview123/v4/34/e9/75/34e975de-4304-9b67-4d6c-53bc7e5c1329/mzaf_230999934006196447.plus.aac.p.m4a Download or Stream This Song: iTunes Amazon Spotify This song contains explicit lyrics.