FOXBORO, Mass. — Powerful but never piercing, brassy without any old-school jazzy hokum, with warmth even in its highest range, Chaka Khan’s voice has always been a pop-music miracle. Last night at the new Showcase Live! at Patriot Place, on the grounds of Gillette Stadium, she showed she hasn’t lost a thing.

Khan started off strong with her “comeback” hit from 1984, the Prince-penned “I Feel for You” and never looked back. Her hits, both solo and with Rufus, merged disco, soul and funk, and the new material she sprinkled into the two-hour show was on a par with the familiar stuff.

Her crack band dug into the material, giving a hard R&B edge to songs such as “Do You Love What You Feel?” that helped it come alive, although some of the disco ethereality of, say, “Ain’t Nobody,” was regrettably missing. “What Cha’ Gonna Do For Me” was suitably slinky, however.

“Will You Love Me,” from last year’s Funk This album, a Jimmy Jam-Terry Lewis production, was a stripped-down, ’80s-funk jam that her band gave a warm, organic feel — particularly bassist Andrew Gouchet. The soul power ballad “Angel” was an opportunity for Khan to rhapsodize about addiction and recovery (“I forgot I wrote this song … I was high”).

There was a 20-minute delay in the middle of the show after fire alarms went off during, perhaps suitably, “Through the Fire,” which Khan turned into a detailed confessional. Afterwards she went back to old-school funk with “You Got the Love,” before a version of her first Rufus hit, “Tell Me Something Good,” that was more of a celebration of the song than a performance, losing the wonderfully haphazard neighborhood-jam feel of the record.

A marathon version of “Sweet Thing” featured long showcases for each band member. As good as they individually were, the momentum was lagging until the wrapup of an exuberant “I’m Every Woman” and an encore of a relatively relaxed “Stop On By.”

This was the second show for the Showcase Live! venue, and it’s a winner, with pristine sound that might be a little loud in the front rows but even then allows the listener to hear everything (even the bass, usually the first to get swallowed up). The food and drink service make the vibe a little different than a typical theater or shed show, and that takes a little getting used to, but no spot in the room is far from the stage –– in fact, the use of the video screens was unnecessary and distracting and there’s still some dancing room for those so inclined.

rmassimo@projo.com