Notable shows and festivals in and around New Orleans this week include:

Ivan Neville’s “Injuns Here Dey Come”

6:30 p.m. Saturday

Congo Square Rhythms Festival in Armstrong Park

Admission: Free

The free Congo Square Rhythms Festival in Armstrong Park opens with what could be called “Mardi Gras Indian Saturday.” The schedule includes the nine-year-old festival’s traditional Indian battle, the venerable Big Chief Monk Boudreaux & the Golden Eagles and, as the finale, keyboardist/vocalist Ivan Neville’s Indian tribute, “Injuns Here Dey Come.” He’ll be joined by Boudreaux, Big Chief Roderick Sylvas of the Wild Tchoupitoulas, and Big Chief Juan Pardo of the Golden Comanches. On Sunday, the festival features “The Voice” contestant Tonya Boyd-Cannon, African percussion and dance troupe Bamboula 2000, funk/soul/spoken word ensemble Tank & the Bangas, rapper Dee-1 and the Rebirth Brass Band.

Fall Out Boy

7 p.m. Saturday

Smoothie King Center, 1501 Dave Dixon Dr.

Tickets: $45 and $65 plus service charges

Fall Out Boy is riding the crest of an improbable comeback. The emo rock band from Chicago broke big in the mid-2000s thanks to “Sugar, We’re Goin’ Down” “Dance, Dance” and other hits, then burned out just as quickly. After a four-year hiatus, Fall Out Boy regrouped in 2013. Two subsequent albums have yielded more hits — “My Songs Know What You Did in the Dark (Light ‘em Up),” “Uma Thurman,” the anthemic “Centuries” and “Irresistible,” with guest vocalist Demi Lovato — and restored Fall Out Boy to arena headlining status. In an apparent play on the “winter is coming” motto from “Game of Thrones,” Fall Out Boy dubbed its current tour Wintour is Coming. AWOLNATION and PVRIS are also on the bill.

Bach Around the Clock

7 p.m. Friday to midnight Saturday

Trinity Episcopal Church, 1329 Jackson Ave.

Admission: Free

Organist Albinas Prizgintas may have retired from his Sunday morning duties as organist, but he and his wife, Manon, are still very actively running Trinity’s extracurricular music programs, including this weekend’s 18th annual Bach Around the Clock marathon. For 29 hours, Trinity will host round-the-clock entertainment in celebration of Johann Sebastian Bach’s 330th birthday. The program opens with the Yale Glee Club chorale and the New Orleans’ Children’s Chorus. At midnight Friday, Albinas will play the church’s massive pipe organ for a screening of the silent film “Phantom of the Opera.” Other “Bach” participants include jazz pianist Ellis Marsalis, trombonist Delfeayo Marsalis & the Uptown Jazz Orchestra, Lula Elzy & the New Orleans Dance Theater, and musicians from the Louisiana Philharmonic Orchestra and various local universities. The program includes baroque and classical music, jazz, R&B, blues, folk and opera. Sleeping bags are welcome on Friday night.

Festival Bonfouca featuring Big Freedia, Sonny Landreth, Marcia Ball, Cyril Neville

Friday to Sunday

Heritage Park in Slidell

Tickets: $5 for Friday, $10 for Saturday and Sunday, $20 for a three-day pass. Weekend VIP packages are $150.

The MotherShip Foundation, the nonprofit that produces the Bayou Boogaloo festival alongside Bayou St. John in New Orleans, has launched a new spring festival on a different bayou. Festival Bonfouca will occupy the banks of Bayou Bonfouca in Slidell’s Heritage Park this weekend. For a first-year event, it boasts an impressive, and diverse, roster of regional talent. Bounce rapper and reality TV star Big Freedia closes out Friday. Saturday’s featured acts include the Sweet Tea Trio from Alabama, southwest Louisiana slide guitarist Sonny Landreth, and Texas boogie-woogie piano queen Marcia Ball. On Sunday, hear Dash Rip Rock, Chubby Carrier, the Honey Island Swamp Band, the Molly Ringwalds and Cyril Neville’s Royal Southern Brotherhood. The festivities also include a fishing rodeo, arts market and kayak rentals. Go to festivalbonfouca.com for the complete schedule.

Other notable shows this week:

On Friday, Drowning Pool rocks Southport Hall, NOFX hits the House of Blues and guitarists Mike Zito and Chuck Credo IV team up at Rock ‘n’ Bowl. The Rock and Worship Roadshow brings a bevy of Christian rock bands to the Lakefront Arena on Friday, including Jeremy Camp, the Newsboys, Phil Wickham, Family Force 5, Mandisa and Danny Gokey; tickets are $10 at the door.

Johnny Sketch & the Dirty Notes put rock, funk and jazz in a blender at the Maple Leaf. Trumpeter Kermit Ruffins & the Barbecue Swingers play early at the Blue Nile, followed by the Brass-a-Holics.

Moving on to Saturday, the rescheduled New Jack Swing Reunion at the Lakefront Arena features Guy, Blackstreet, Al B. Sure, Silk, Wrecks N Effect, Big Bug & Today and Force MD’s.

Trombone-powered New Orleans brass-funk-rock band Bonerama “Gets the Led Out” at Tipitina’s on Saturday with a set heavy on Led Zeppelin classics; guitarist Marc Stone opens. Also on Saturday, the Grammy-winning keyboardist Jon Cleary fronts his Absolute Monster Gentlemen at the Maple Leaf, trumpeter Eric “Benny” Bloom & Sonic Bloom stage a tribute to the Ohio Players at Chickie Wah Wah, and vocalist Phillip Manuel stages a tribute to Nat King Cole at Snug Harbor.

Jazz bassist Jason Stewart anchors a trio at Snug Harbor on Sunday.

Guitarist Anders Osborne headlines the free weekly Wednesday at the Square show at Lafayette Square downtown, with the like-minded Colin Lake opening.