At his debut 1776 he was given the critic: "At last, the director at the Opera have required a rival to Mr Carl Stenborg in young Karsten, who sang and played very well in Adonis.
Vid sin debut 1776 fick han kritiken: Ändtligen har direktören vid operan fått en rival åt herr Carl Stenborg uti unge Karsten, som sjungit och spelat mycket väl uti Adonis.