Stone Sourat. Slipknot – Tumult [Piano Cover Tutorial] ( Apr 5, 2016 Cover Metal, Cover Rock, Cover Slipknot, Cover Stone Sour, Cover Tumult, Mate. Feed. Kill. Repeat., Stone Sour, How to play Stone Sourat. Slipknot – Tumult (Instrumental MIDI + Synthesia) Like 0 Thanks! You've already liked this « Stereo – Pokerface, Lady Gaga cover (Live @ Cult & Tumult Veldhoven) » Gaza Teen’s War Tweets Attracts over 160,000 Followers