Complex sentence: Throughout the 1960s her star began to rise, mostly as a songwriter, but also as a soloist and as the leader of "The Singing Rambos" she traveled internationally, including a 1967 trip to Vietnam to perform for American troops.
Split into simpler sentences: Throughout the 1960s her star began to rise, mostly as a songwriter, but also as a soloist. As the leader of The Singing Rambos she traveled internationally, including a 1967 trip to Vietnam to perform for American troops.