Quasthoff, Thomas (Personal Name)
Reimann, A. Lieder, p1996: label (Thomas Quasthoff) container (baritone) insert (bass-baritone)
Int. ww in mus., 16th ed. (Quasthoff, Thomas; b. Nov. 1959, Hildesheim, Germany; baritone)
Die Stimme, c2004: t.p. (Thomas Quasthoff) jkt. (b. 1959, Hildesheim; baritone)
Kutsch-Riemens, 3. erw. Aufl. (Quasthoff, Thomas; b. Nov. 1959, Hildesheim; baritone)
Grove music online WWW site, 02-09-05 (Quasthoff, Thomas; b. Hildesheim, 1959; German bass-baritone)
Wikipedia WWW site, 02-09-05 (Thomas Quasthoff; b. Nov. 9, 1959; German bass-baritone)
Cramer/Marder Artists WWW site, 02-09-05 (Thomas Quasthoff; German bass-baritone)