I have never heard of Martin Block before and this isn't surprising, since he was a popular disc jockey back in the 1940s. He made about a half dozen shorts for MGM...and knowing which is which is tricky. All have the same title AND all were made the same year! The only way to know which is which is by the guest stars in each film.
This installment is unusual because it features the music of Frankie Carle and His Orchestra...as well as with Carle's daughter, Marjorie Hughes, as the soloist. Block also interviews Marjorie and you learn about her involvement with her father's band. Overall, the music is very pleasant but not among the very best in this series.