Lee, Sebastian: 40 Etüden, op. 31 (Violoncello Solo)

Lee, Sebastian: 40 Melodious and Progressive Studies for Violoncello, op. 31 (Volume 2)

Lee, Sebastian: 40 Melodious and Progressive Studies for Violoncello, op. 31 (Volume 1)

Lee, Sebastian: 40 Leichte Etüden / 40 Easy Studies op. 70 (Violoncello)

Lee, Sebastian: 12 Melodische Etüden / 12 Melodic Studies, op. 113 (Violoncello)