Sing Like Satchmo is a term used to describe the singing style of Louis Armstrong, also known as Satchmo. The two crossword solutions for this term are RASP and SCAT. RASP is a vocal technique that involves producing a rough, throaty sound. It is often used in blues and jazz music. SCAT is a type of vocal improvisation where the singer uses nonsense syllables instead of words. Both of these techniques were used by Louis Armstrong in his singing style.