premise: Benny Bell (born Benjamin Samberg or Benjamin Zamberg, March 21, 1906 – July 6, 1999) was an American singer-songwriter who reached popularity in the 1940s, with a comeback in the 1970s. He is particularly remembered for his risqué but cheerfully optimistic songs.
hypothesis: Benny Bell did not always write his own songs.
reason: The information says he was a singer songwriter but it does not specify he wrote all songs he performed.