Louis armstrong was not only influential as a jazz trumpet player, but his contemporaries also found him to be very influential as a:

I believe the answer is: Vocalist

Louis Armstrong's talent as a vocalist started to become noticable during his appearance on the pit orchestra in 1920s, most notably for his rendition of "Ain't Misbehavin'". Due to his magnificent skill, his version of the song became the highest selling record for the song to date.

answer; conditional stimulus will trigger a conditioned response;

answer; assisted marriages;