Access all areas at the metal riff-master's sold-out, preshow guitar clinic When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It’s midday at the O2 ...

I first learned about the double diminished scale in the 1970s, inspired by pianists like Chick Corea and Herbie Hancock. At that time, I was studying a book by Nicolas Slonimsky called Thesaurus of ...