He was a student of Potenza in Copenhagen .
When student returned in 1778 , student became the perhaps most successful male singer in Sweden together with Carl Stenborg until 1806 , admired for the beauty of both student 's voice student 's his body .
He was a student of Potenza in Copenhagen , and when he returned in 1778 , he became the perhaps most successful male singer in Sweden together with Carl Stenborg until 1806 , admired for the beauty of both his voice and his body .