what cover songs do you people like and who performs the tunes?
richard cheese does good songs where he takes any song and turns it into jazz/classic versions
Peter Hollens Youtube covers (just search for him by name and check out his channel). Most of his covers are a capella with him mixing multiple wordless tracks of his own voice to create an accompaniment, then laying a main vocal of the lyrics over that accompaniment. He's a terrific singer and he does do more conventional singing as well (there's a version of "Georgia on my Mind" that he did with his wife, singer Evynne Hollens, and her regular pianist that is amazing).