Veteran rocker Lou Reed is recovering after undergoing a life-saving liver transplant.

The former Velvet Underground singer had the operation in April (13), his musician wife Laurie Anderson revealed in a recent interview with Britain's The Times.

She explains, "It's as serious as it gets. He was dying. You don't get it for fun... I don't think he'll ever totally recover from this, but he'll certainly be back to doing (things) in a few months. He's already working and doing (martial art) t'ai chi. I'm very happy. It's a new life for him."

The 71 year old pulled out of a number of concerts - including two sets at California's Coachella music festival in April (13) - to have the procedure in Cleveland, Ohio.

Anderson admits she was impressed with the treatment her husband received, adding, "You send out two planes - one for the donor, one for the recipient - at the same time. You bring the donor in live, you take him off life support. It's a technological feat. I was completely awestruck. I find certain things about technology truly, deeply inspiring."

The couple married in 2008.