Quartz
Against All Odds
Quartz - EP
NWOBHM Majestic Metal, Vol. 2
Hydra - EP
On The Edge Of No Tomorrow
So Ein Ding Muss Ich Auch Haben
Redemption (Covert23 vs. Quartz)
Fear No Evil
Sound Circus '77 (Live) - EP
Back in the Band: Live and Revisited
Loose Control
Basic Channel (Covert23 vs. Quartz)
Red Line (Covert23 vs. Quartz)
Love Addict (Covert23 vs. Quartz)
D's Wot I Think - EP
Too Hot To Handle
Tribal Love (Covert23 vs. Quartz)
Telepathik Moments (Covert23 vs. Quartz)
Its a Tribal Thing (Covert23 vs. Quartz)
One (covert23 vs. Quartz) - EP
Hope (Covert23 vs. Quartz)