The biggest "happy accident" in Pop music history occurred during the first recording session Elvis did with Scotty and Bill at Sun Studios in July of 1954. During a break, Elvis began riffing and improvising on guitar and voice to the blues song , and the others enthusiastically joined in, creating the new musical sound Sam Phillips had been searching for.

Idid the quiz. the true answers to this question is  2.michelangelo used the hatching technique of drawing parallel line close together  1.leonardo used the sfumato technique of blending and blurring chalk so edges nearly dissapear3.van gogh used a variety of expressive strokes to create different surfaces and textures. to the above answer, i got it wrong. i have copy-pasted from the question, putting the answers here.i hope this .  ~rosy67read more on -