[1] In 2018, Sneap joined Judas Priest as a touring guitarist, following long-time lead guitarist Glenn Tipton's diagnosis of Parkinson's disease which conflicts with his touring abilities,[2] and while not an official member of the band, he contributed guitar work to their nineteenth studio album Invincible Shield (2024).

[3] He is one of the most active music producers in the heavy metal music genre and has worked with bands such as Judas Priest, Accept, Blaze Bayley, Dream Theater, Saxon, Opeth, Amon Amarth, Arch Enemy, Exodus, Megadeth, Kataklysm, Kreator, Nevermore, Testament, Carcass, Fear Factory, Overkill and DevilDriver.

[5] He also mixed Megadeth's show from the DVD The Big Four: Live from Sofia, Bulgaria, also featuring Metallica, Slayer and Anthrax.

He started learning guitar with founding Hell member Dave Halliday, who had a huge effect on Andy and left him all the rights to all his songs and equipment in his will following his death.

[8] Sabbat released the album on 20 April 1988 via Noise Records, which received positive attention from journalists and fans alike.