Quasthoff is a full-time voice professor; during his performing career, he performed about 50 times a year.
During his performing career, he performed about 50 times a year. Quasthoff is a full-time voice professor.
Quasthoff is a full-time voice professor. During his performing career, he performed about 50 times a year.
Quasthoff is a full-time voice professor. During his performing career, he performed about 50 times a year.