Complex sentence: In 1965, Merle Haggard recorded her song "All My Friends Are Gonna Be Strangers", and then Anderson became one of Country Music's most successful and most remembred songwriters.
Split into simpler sentences: In 1965, Merle Haggard recorded her song "All My Friends Are Gonna Be Strangers". The success of "Strangers" helped make Anderson one of Country Music's most successful and most remembred songwriters.