Good does not equal popular any more than talented equals successful.

Satchmo had a horrible, gravely voice and yet was a successful and popular singer. His incredible talent lied not in his vocal quality but in his ability to entertain.

I love listening to Mrs. Miller not because she is a good singer, but because her singing was so bad it's amusing.

Musical Theater aficionados generally agree that Stephen Sondheim is a brilliantly talented composer/lyricist and yet most of his shows (the ones he wrote both the music and lyrics, not his earlier collaborations like West Side Story and Gypsy) have not been particularly successful at the box office.