ENTERTAINMENTBehind the scenes: Stars rehearse for Willie Nelson's 90th birthday showAustin American-StatesmanWillie Nelson and George Strait at rehearsals for two nights of concerts honoring Willie's 90th birthday at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsWillie Nelson and George Strait at rehearsals for two nights of concerts honoring Willie's 90th birthday at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsGeorge Strait and Willie Nelson at rehearsals for two nights of concerts honoring Willie's 90th birthday at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsRosanne Cash and Kris Kristofferson at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsTyler Childers rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsTyler Childers rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsEdie Brickell and Charlie Sexton rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsBob Weir and Billy Strings at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsLeon Bridges rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsCharley Crockett and Edie Brickell rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsBilly Strings at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsBilly Strings at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsBilly Strings and Orville Peck at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsKris Kristofferson, Rosanne Cash and band leader Don Was at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsChris Stapleton rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsNathaniel Rateliff and Margo Price rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsLeon Bridges and Gary Clark Jr. rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsMiranda Lambert rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsLeon Bridges and Gary Clark Jr. rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsNathaniel Rateliff and Margo Price rehearse for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird PresentsMargo Price rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsRosanne Cash rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsOrville Peck rehearses for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Jay Blakesberg For Blackbird PresentsChris Stapleton and the McCrary Sisters at the rehearsal for Long Story Short: Willie Nelson at 90 at the Hollywood Bowl.Josh Timmermans For Blackbird Presents