| 1 | sebastian gramss underkarl: 20th century jazz cover (1996, cd, ger, tcb) |
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| 2 | sebastian gramss underkarl: jazzessence (1999, cd, ger, tcb records / the montreux jazz label) |
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| 3 | underkarl: maraton (2001, cd, private release) - incl. 'eat that question' (frank zappa) |
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| 4 | sebastian gramss underkarl: second brain (2003, cd, ger, enja) |
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| 5 | sebastian gramss underkarl: freemix (2004, cd, austria, enja) = also known as "second brain revisited" |
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| 6 | sebastian gramss underkarl: goldberg (2007, cd, ger, enja) |
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| 7 | underkarl: homo ludens (2012, cd, ger, rent a dog) |
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| 8 | underkarl: timetunnel 25 (2017, cd, ger, rent an dog) |
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