This Day in Jazz History On this day: July 21 1930Vocalist Helen Merrill born in New York, NY.1930Louis Armstrong records "I'm Confessin'."1931Saxophonist Plas Johnson born in Donaldsonville, LA.1938Benny Carter arranges and plays on an all-star session for Lionel Hampton, including trumpeter Harry James and drummer Jo Jones. Search by Year Go! Disclaimer: Though we have checked our dates, this listing may contain erroneous information. If you discover errors or omissions, please report it to us. Thank you.