In Pete Townshend’s London home, there’s a staircase that leads to an old artist’s studio, a garret where the 48-year-old musician does much of his prose and song writing. Gold and platinum records, citations and other acknowledgments of merit line the walls of the stairway.

“As I go up, I pass by all my trophies,” says Townshend, who has a new Tony Award for the Broadway production of Tommy to add to his collection.

“Of course, I also pass them on the way out, having gone up there and done nothing at all for four hours,” laughs the former Who guitarist, who will play a sold-out concert tomorrow night at the Tower Theater, and has another show planned for the Spectrum on Aug. 10.

“It’s just nostalgia, really. And it’s probably not a good thing. I should just put it all in a big box and put it in the attic.”

After three decades as a composer, rock guitar hero, band leader and philosopher on things social, political and personal, Townshend is no longer interested in churning out albums full of disconnected songs.

He wants to focus on narrative and theatrical works, leaving the standard rock album market to the U2’s and Pearl Jams. In other words, more things like Tommy — first re-