Original sentence: As an improvisational showcase for all four group members, and especially for Jimmy Page's electric blues guitar solos, "Since I've Been Loving You" became a staple and fan favorite of Led Zeppelin's live concert performances from 1970 until the end of their ninth American tour in summer 1973 (it was performed less frequently thereafter)
Edited sentence: As an improvisational showcase for all four group members, and especially for Jimmy Page's electric blues guitar solos, "Since I've Been Loving You" became a staple and fan favorite of Led Zeppelin's live concert performances from 1970 until the end of their ninth American tour in summer 1973