Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

He is known for his 1973 album " Svantes viser " with poet Benny Andersen .

His public breakthrough came in 1973 with the album " Svantes viser " , a collaboration with poet Benny Andersen , whom he has cooperated closely with since .