Jürg Wickihalder (left), Barry Guy and Lucas Niggli perform at Vortex Jazz Club in London April 16 as part of Intakt Festival

John Dorhauer (center) leads the Heisenberg Uncertainty Players in a performance of “We Tear Down Our Coliseums” at Elmhurst College in Elmhurst, Illinois, on April 1.

Vijay Iyer (left) and Tyshawn Sorey at Q2 in New York on April 13.

Kenny Barron and bassist Dave Young perform in an Oscar Peterson tribute concert at Symphony Center on April 7. Todd Rosenberg

Ingebrigt Håkaer Flaten (left), Mette Rasmussen and Torbjörn Zetterberg perform at the Vossa Jazz Festival in Voss, Norway.

Dave Holland, a newly named NEA Jazz Master, performs at the Kuumbwa Jazz Center in Santa Cruz.

Lawrence Brownlee as the title character in Charlie Parker’s YARDBIRD

The 2017 NEA Jazz Masters at the 2017 NEA Jazz Masters Tribute Concert on April 3, 2017 at the John F. Kennedy Center for the Performing Arts. (left to right): Representing Ira Gitler, Fitz Gitler; Dick Hyman; Dave Holland; Dr. Lonnie Smith; and Dee Dee Bridgewater.

The Art Ensemble of Chicago members Don Moye (left), Roscoe Mitchell, Lester Bowie, Joseph Jarman, Malachi Favors are the subject of a new book, which was released at a Fred Anderson tribute concert in Chicago on March 29.

Nir Felder (left), Maurice “Mobetta” Brown, Michael League (background) and Skerik at the Jazz Standard in New York City on March 28.