Only a week in and I'm able to figure out songs by ear. This is something I've always wanted to do but have never learned from any teacher in 40 years of playing/noodling on guitar. I've tried lessons but this was never covered by any of my six or seven instructors. Fretboard Wizard is, for me, worth the total price of the TAC and FW. I will point anyone wanting to learn guitar to TAC.