If you're an audiophile, you've read that Chad Kassem, proprietor of Acoustic Sounds, in Salina, Kansas, has bought the finest vinyl-pressing equipment, hired some of the hottest engineers to modify and operate it, and come up with a new line of LPs called QRP, for Quality Records Pressings.

One of his first QRP products is a 45rpm, 200-gram pressing of Ella & Louis. If you're a jazz-following audiophile, go buy this right away. Flummoxed by the $50 price tag? How much would you pay for the most palpable illusion you'll ever experience that Pops and the First Lady of Song are back among the living—standing, breathing, singing, and blowing, right in front of you?

On their latest album, the trio are joined by guitarist John Scofield, not as a sideman (as MMW were on his A Go Go from 1998) but as a fully insinuated member of the band, which is thus called MSMW. The double-disc album's (appealingly insouciant) title is In Case the World Changes Its Mind (on the Indirecto label). It was recorded live at various spots on their 2006 tour. It's the best thing any of them have done, together or apart, in years.

Darcy James Argue has one of the most original big-band sounds in recent years. His 2009 CD, Infernal Machines, may be the most promising jazz debut of the decade. But his world premiere at the Brooklyn Academy of Music this week—an hour-long suite, accompanying a mix of animation and live painting by graphic-novel artist Danijel Zezelj, called Brooklyn Babylon—puts the composer and his 18-piece big band, Secret Society, on the verge of a quantum leap. . .

Three things about this are rare: Wheeler, a Canadian and longtime UK resident, almost never plays in the States; his big-band music is almost never played, period (and was recorded all too infrequently); and Hollenbeck's 18-piece Large Ensemble, remarkably inventive and often wittily dissonant, almost never plays other people's music, least of all lush, cushion-of-air arrangements like Wheeler's (though, it should be added, Wheeler's melodies ripple with elusive romance and mystery).

Friday night's 9pm set, though, was wonderful. The ensemble, tight as ever, took to that creamy, wall-to-wall big-band sound as if they'd been covering Basie standards for years, without giving up any of its sharp-edged verve. Wheeler, now 80, was a bit short on breath, but his sinuous lines and those high-note grasps were as captivating as ever.

A year ago, almost to the day, I raved in this space about Sonny Rollins' 80th birthday concert, which I'd seen the night before at the Beacon Theater in New York City. I wrote: "A few thousand jazz fans are feeling lightheaded this morning," still "marveling" at having finally seen "a concert that made them tremble and that people will be talking about years from now."

This week, Rollins released a new CD, Road Shows, Vol. 2, which consists mainly of highlights from this concert, and I opened the package with some trepidation. Would the music, as a purely audio phenomenon, hold up to my memory of it? Or did my dizziness at the time stem, at least in part, from the thrill of being there, as part of the audience, at an event of such high expectations?

Violinist Jenny Scheinman is back at Manhattan’s Village Vanguard this week with the quartet she calls Mischief & Mayhem, and judging from the two times I've seen them (the first a year ago, the second last night), I'd say this is one of the great raucous jazz-fusion bands of our time. Go see them. A splendid time is guaranteed for all.

By "jazz-fusion," I mean not just jazz + rock (though there is plenty of that, thanks to the presence of Wilco's Nels Cline on electric guitar) but . . .