Bad

The very first time I heard this busker I had to pause, and really listen to what he was singing*. The problem isn't necessarily his voice or his guitar playing, it's just that he mangles the words to the songs so badly that despite singing in tune you really have to concentrate in order to decipher the song. Today it was the turn of 'I am sailing' to be murdered, I paid him & he still wouldn't stop hurting my ears.

* or trying to sing