Louis Armstrong, nicknamed Satchmo or Pops, an American jazz trumpeter and singer - Coming to prominence in the 1920s as an "inventive" cornet/trumpet player, Armstrong was a foundational influence in jazz, shifting the focus of the music from collective improvisation to solo performance. With his instantly-recognizable gravelly voice, Armstrong was also an influential singer, demonstrating great dexterity as an improviser, bending the lyrics and melody of a song for expressive purposes.
Dinah Washington. In her time, black women sang the blues in a joint and gospel in a pew. Washington wasn't content with that. Her sound was multispectral. Oh she sang her blues to her man and her gospel to her God. And she sang jazz, country, pop, & rock. She could sing it all. She could sing it well. It was without irony they deemed her "Queen."