I said: 'Look what happens when you speed this riff up'. Guitarist Greg Leon, who initially took Randy Rhoads' place in Quiet Riot, has claimed that he helped Rhoads write what would become the iconic "Crazy Train" riff. He died in a plane crash while on tour with Osbourne in Florida in 1982. We messed around, and the next thing I know he took it to a whole other level and end up writing the 'Crazy Train' riff." "We were hanging out, and I showed him the riff to Steve Miller's 'Swingtown'. "Crazy Train" is one of the most well known heavy metal guitar riffs. Guitarist William Weaver has also claimed to have written the signature riff and then presented the musi… Rhoads was the guitarist on the tracks " Crazy Train " and " Mr. Crowley " on the Blizzard of Ozz album.