Final answer:
Cover songs emerged due to various circumstances in the music industry, with the aim of reaching a larger audience and incorporating different musical styles. Elvis Presley and Jimi Hendrix played significant roles in the development of rock and roll through their impactful cover versions of popular songs.
Step-by-step explanation:
Cover songs started to appear due to various circumstances in the music industry. One of the main reasons was the desire to reach a wider audience by taking a popular song and giving it a fresh interpretation. Another reason was the influence of different genres and styles in music, where artists from one genre would cover songs from another genre.
Two cover artists that were important to the development of rock and roll are Elvis Presley and Jimi Hendrix. Elvis Presley became known for his covers of rhythm and blues songs, often introducing them to a wider audience. Jimi Hendrix's electric guitar adaptations of songs like 'All Along the Watchtower' by Bob Dylan showcased his innovative and influential style.
Learn more about Circumstances surrounding the appearance and importance of cover songs in the development of rock and roll