Which singers do you suggest for English learners to listen to improve their listening and speaking? Whose songs are more understandable for an English learner?
If you are looking for more modern singers, try Michael Bubble, Diana Krall, or Rod Stewart's "Great American Songbook"
Who else ?
What about Chris de Burgh?
His voice is clear,his songs are nice and understandable,I think that's a good choice.