This one is going to be interesting. The customer wants it double-sided; C Major - Eb Major. I decided to add more versatility to this drum by making the C side bassy and the Eb side at a higher octave. Thin steel makes deeper tones and thicker steel naturally has higher tones but more resonance. This one will be of two thicknesses and will be 1/8" taller, to provide a larger resonating chamber and hopefully be able to handle very deep tones... It'll all be a mystery until completion... I hope to have it done by tomorrow afternoon.