Discografie
Ernst speelde op de volgende albums.
| 1983: | Highway Chile - Storybook Heroes |  |
| 1984: | Highway Chile - Fever (mini album) |  |
| 1985: | Helloise - Cosmogony |  |
| 1987: | Helloise - Polarity |  |
| 1991: | Rosetta Stone - Touch the sky | |
| 1992: | Tamas - Guitartales |  |
| 1993: | Peter Magnee - Voodoo play |  |
| 1993: | Tamas - Guitarmania |  |
| 1994: | Tamas - The Dreamlake |  |
| 1994: | Ian Parry - Artistic licence |  |
| 1995: | Ian Parry - Thru the looking-glass |  |
| 1995: | Ayreon - The final experiment |  |
| 1996: | Helloise - Cosmogony (re-release) | |
| 1997: | Threnody - Threnody |  |
| 1997: | Robert Berger - Future time | |
| 1998: | Helloise - Polarity (re-release) | |
| 1998: | Helloise - A time and place for everything |  |
| 2000: | Van Ee - Powerplay (Dance with an angel) |  |
| 2001: | Helloise - Fata morgana |  |
| 2002: | Highway Chile - On the road again (live) |  |
| 2004: | Eric Norlander - Stars rain down (live) |  |
| 2004: | Lana Lane - Tales from Europe and Japan (live DVD) |  |
| 2005: | Lana Lane - Lady McBeth |  |
| 2005: | Threnody - Control |  |
| 2006: | Lana Lane - 10 th Anniversary Concert / Live in Tokyo (CD/DVD) |  |
| 2007: | Lana Lane - Red Planet Boulevard |  |
| 2007: | Rob Orlemans and Half Past Midnight - Open the Cage (DVD) |  |
| 2008: | Highway Chile - Keeper off the Earth |  |
| 2010: | Rob Orlemans and Half Past Midnight - Into the Spirit (CD) |  |
| 2013: | Rob Orlemans and Half Past Midnight - Highway of Love |  |
2014: Helloise - Live4Life Live Dvd en cd 