Marty Friedman is an American guitarist, best known for his tenure as the lead guitarist of thrash metal band Megadeth from 1990 to 2000. He is also known for playing alongside Jason Becker in Cacophony from 1986 until 1989, as well as his 13 solo albums and tours. Friedman has resided in Tokyo since 2003, where he has appeared on over 700 Japanese television programs such as Rock Fujiyama, Hebimeta-san, Kōhaku Uta Gassen and Jukebox English. He has released albums with several record labels, including Avex Trax, Universal, EMI, Prosthetic, and Shrapnel Records.

Randy Rhoads was an American guitarist. He was the co-founder and original guitarist of the heavy metal band Quiet Riot, and the guitarist and co-songwriter for Ozzy Osbourne's first two solo albums Blizzard of Ozz (1980) and Diary of a Madman (1981). Rhoads was posthumously inducted into the Rock and Roll Hall of Fame in 2021.

John Petrucci is an American guitarist, best known as a founding member of the progressive metal band Dream Theater. He produced or co-produced all of Dream Theater's albums from Metropolis Pt. 2: Scenes from a Memory (1999), and has been the sole producer of the band's albums released since A Dramatic Turn of Events (2011). Petrucci has also released two solo albums: Suspended Animation (2005) and Terminal Velocity (2020).

Synyster Gates or simply Syn, is an American guitarist, best known as the lead guitarist of heavy metal band Avenged Sevenfold. He ranks No. 9 on Guitar World's best metal guitarists of all time. Gates was voted as Best Metal Guitarist in the World by Total Guitar in 2016 and once again in 2017.