Kenny Edwards, an original member of country rock band the Stone Poneys, has died aged 64.
A statement on his website said he passed away "peacefully" and "surrounded by love" on Wednesday.
The Los Angeles Times had previously reported that the singer-songwriter and guitarist had been rushed to hospital after collapsing while on tour.
He was also known for his collaborations with singer-songwriters Linda Ronstadt and Karla Bonoff.
The Stone Poneys disbanded in 1967 after their breakthrough hit Different Drum.
Edwards went on to form the folk-rock band Bryndle with Bonoff, Wendy Waldman and Andrew Gold.
He was also a supporting guitarist and singer for artists including Stevie Nicks, Don Henley, Brian Wilson and Art Garfunkel.