Complex sentence: It was one of the first live rock music bootlegs, and was made notorious as a document of the The Rolling Stones American Tour 1969 whose popularity forced the Stones' label Decca Records to release the live album Get Yer Ya-Yas Out !
Split into simpler sentences: It was one of the first live rock music bootlegs and was made notorious as a document of their 1969 tour of the United States. The popularity of the bootleg forced the Stones' label Decca Records to release the live album Get Yer Ya-Yas Out!