Rock stars like to label tours with abstract or meaningless titles (what exactly was a Zoo TV anyway?).

Not Roger Daltrey.

The 65-year-old Who singer has named his first solo tour in years Use It or Lose It. No metaphor or pun here. Daltrey’s title is to be taken literally.

“It’s an honest assessment of where I am in my life now,” said Daltrey, who plays the MGM Grand at Foxwoods on Saturday and the House of Blues the day after. “I don’t feel ready with the voice that I’ve got to give up just quite yet. If I don’t go out there and use it every three or four months, at the age I am now it will go.

“One day in the foreseeable future I’ll wake up and a great range of notes will be knocked out of me,” said Daltrey, speaking from a Durham, N.C., tour stop. “You can’t avoid it. It’s called aging. But I’m determined to keep what I can for as long as I can.”

Daltrey’s foil in The Who, Pete Townshend, has nearly gone deaf. He can’t leap around the stage like a maniac the way he once did, but he can still wail on his guitar. And plugging in an electric guitar and hitting power chords will always be easier than booming “We’re all wasted!” in front of 20,000 people. Not being able to yowl through “Baba O’Riley” is the type of thing that could keep you up at night.

“It does weigh on me some nights,” Daltrey said. “My voice is taking longer and longer to warm up, especially after days off. But it does get there and I don’t give up. And fortunately, rock ’n’ roll isn’t about perfect notes. Give me a bum note and a bead of sweat over someone doing it slick any day of the week.”

Use It or Lose It isn’t solely about staying in shape for the next Who project (and there will be a next Who project Daltrey confirmed, even if he won’t reveal details). It’s also about performing a set Daltrey has absolute control over.

His all-over-the-map show includes The Who’s “Pictures of Lily,” “Blue, Red & Grey” done solo on ukulele, “Cache Cache” from 1981’s “Face Dances,” Mose Allison’s “Young Man’s Blues,” John Entwistle’s signature tune “Boris the Spider,” plus such hits as “I Can See For Miles,” “Squeeze Box” and “Baba O’Riley.”

The dynamic material is a reflection of Daltrey’s dynamic tastes (and voice).

“That’s what I love about Pete’s songs,” he said. “There’s always something different going on. I hate when rock ’n’ roll gets bogged down with one song after another that all sound the same. It drives me nuts. Melody isn’t enough. You have to have textures within the soundscape, and Pete’s songs have got that.“

And then there’s the Johnny Cash medley.

“I’ve always tried to do Johnny Cash,” Daltrey said. “Now I’m old enough to do it. It brings the house down every night.”

Daltrey has been a Cash fan since he was a 16-year-old working at a sheet metal factory.

“We were banging on pieces of metal all day long to this factory rhythm,” he said, “and Johnny Cash songs were perfect for that. We didn’t have any entertainment. So someone would bang a rhythm and everyone would sing a Johnny Cash song. It made the day go shorter and we’d turn out more work. I look back on those days with incredibly fond memories.”