Declare a 30% off ToneGym voucher here: Sign up for ToneGym:. And, an extra unique thanks goes to Douglas Lind, Vidad Flowers, Ivan Pang, Waylon Fairbanks, Jon Dye, Austin Russell, Christopher Ryan, Toot & Paul Peijzel, the channel's Patreon saints!. SUPPORT ME ON PATREON:. 0:00 Introduction. 0:31 essential signatures. 3:22 associated keys. 6:07 ToneGym. 6:46 chord progressions. 9:03 modal brightness. 11:29 why the circle of fifths? 12:39 piano outro & Patreon. 4 levels of…