There's no expert in the world who could, without knowing its source, say for certain that [the piece] is not [by] Mozart, Cope boasted to Britain's New Scientist . Although Cope grants that his artificial intelligence algorithms may not produce masterpieces, he promises the result is at least better than Salieri.
Cope agrees that his algorithms may not produce the best works, but they will be better than other human composers.
Cope asserts that his algorithms would beat the world best composers.
A drummer is playing guitar.
The young man is a musician.
A baby plays in the sand at the beach.
I think that happened in the 90's.
The Commission did not look into the existing postal law.
A woman is playing the keyboard.