Former Ozzy Osbourne bass player Bob Daisley – who was a key part in establishing the Prince of Darkness’ solo career – believes Diary of a Madman is one of the best representations of Randy Rhoads’ electric guitar talents.

The title track to Osbourne’s second solo record – and the last to feature Rhoads’ dazzling chops before his untimely passing in 1982 – combined the guitar icon’s well-documented love for classical guitar with a suitably maddening musical complexity. Randy’s playing, as Daisley says, is at the heart of the song.

Daisley’s CV is vast: away from Ozzy, he’s shared studios and stages with Uriah Heep, Gary Moore, and Black Sabbath. As such, he knows what it’s like to work with a great guitarist.

When asked to pick the definitive Randy Rhoads guitar song during a conversation with YouTuber Johnny Beane, Daisley quickly highlighted Diary of a Madman – which was apparently inspired by a piece of classical music.