The all-jazz radio station WETF 105.7 FM (South Bend, Indiana) is worth everyone’s attention. For more info, see: https://wetfthejazzstation.org/home
Among the many shows is Joan Merrill’s excellent series The Vocalists with JM Jazz, which is aired every Friday at 1 pm and is repeated Saturday at 5 pm and Monday at midnight (all EST).
You can listen by live streaming at: https://wetfthejazzstation.org/the-vocalists.
Bruce Crowther