For a guy who publicly contemplated retirement less than a year ago, Iggy Pop is keeping pretty busy. Just in time for his 70th birthday today (April 21), the veteran rocker has released "Loneliness Road," one in a trio of collaborations recorded with jazz trio Jamie Saft, Steve Swallow, and Bobby Previte.

As Rolling Stone reports, Pop was eager to experiment when he got the call, and willing to dive in even though he admitted wondering "what have I done?" after he agreed to take part.

"Since I was a little kid I've always been very fond of quieter, maybe more introspective sort of music – everything from Floyd Cramer to Debussy to Sinatra's 'September of My Years,'" Pop said. "There's no big, bashing thing or echo trick to hide behind. And then there are little things where it kinda goes on and on, rises and falls, and it's a trio – they were doing what they wanted within their own boundaries. I tried to come in and live in it, basically."

In addition to "Loneliness Road," which you can check out below, Pop tracked vocals for two other songs on the LP, which is due out May 26 through the Rare Noise imprint. It's just the latest abrupt artistic turn from Pop, who released another new song, "A--hole Blues," just days ago — and whose continued creative wanderlust seems to signal a readiness to keep making music for years to come.

"I still have that "let's try this and see what happens" thing," said Pop. "I've never lost that since way, way early. Even when I was in the high-school cover band: 'Let's do this backwards and see what happens,' or 'How 'bout if I have a 16-foot drum riser!' You know, whatever. Just try some stuff. That's what I'm doin'."

Listen to Iggy Pop Sing "Loneliness Road"

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