LOS ANGELES — Rock performer David Crosby has undergone heart surgery and is postponing his sold-out California shows.

Publicist Michael Jensen tells City News Service the 72-year-old had a cardiac catheterization last week to fix a blocked coronary artery. He’s expected to make a full recovery, but concerts planned for February in San Francisco and West Hollywood will be moved to April.

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Crosby says he’ll be ready to perform with the group Crosby, Stills and Nash on a tour that kicks off in Richmond, Va., on March 4.

Crosby underwent a liver transplant in 1994.

– From news service reports