Kacey Musgraves, Kehlani, Lily Allen, Don Toliver, and Delaware Valley Bluegrass Festival are highlights of this last summer week

The unofficial last weekend of Philly’s summer pop music schedule keeps the heat on. There’s Don Toliver and Kacey Musgraves in South Philly, Kehlani in Camden, Lily Allen in Fairmount Park, Los Lobos in King of Prussia, and the Delaware Valley Bluegrass Festival in South Jersey.

Los Lobos

The great Chicano band Los Lobos is the focus of Native Sons, a documentary that is now making the film festival rounds. It shares a name with the band’s 2021 album of songs of Los Angeles. That album was produced by the band’s one non-Los Angeleno: Cheltenham-native sax and keyboard player Steve Berlin. So this Montgomery County gig is a hometown show of sorts for the band that — if justice is ever served — will one day wind up in the Rock & Roll Hall of Fame. 7 p.m., Concerts Under the Stars, 175 W. Valley Forge Road, King of Prussia, concertsunderthestarskop.com.

Don Toliver

The Houston rapper born Caleb Zackery Toliver brought his “Octane Tour” to South Philly in May and already, he’s back. It’s the second “Nitrous” leg of the trek for Toliver’s Octane album, which features Teezo Touchdown and The Odyssey actor Travis Scott. Chase B. is also on the bill. 8 p.m., XfinityMobile Arena, 3601 S. Broad St., xfinitymobilearena.com

Kacey Musgraves

Kacey Musgraves comes back to country on Middle of Nowhere, the Grammy-winning Texas songwriter’s excellent seventh album. Willie Nelson, Billy Strings, and Philly Music Fest headliner Gregory Alan Isakov drop in. Musgraves also finds common ground with fellow Lone Star State singer Miranda Lambert, with whom she had a longstanding beef, on “Horses and Divorces.” Expect this show to turn into a Dolly Parton celebration. Flatland Cavalry opens. 8 p.m., Xfinity Mobile Arena, 3601 S. Broad St., xfinitymobilearena.com

Delaware Valley Bluegrass Festival

Founded at the urging of bluegrass titans Bill Monroe and Ralph Stanley in 1972, the Delaware Valley Bluegrass Festival is a Labor Day weekend tradition that endures.

This year’s three days of music kicks off Friday in Salem County in South Jersey with Kathy Mattea, the country-bluegrass singer who hosts public radio’s Mountain Stage, as headliner. Friday’s lineup also includes the Price Sisters — singing Ohio siblings Lauren and Leanna Price — as well as Virginia guitarist Junior Sisk and the Travelin’ McCourys, sons of bluegrass legend and frequent DVBF headliner Del McCoury.

On Saturday, Dan Tyminski gets top billing. The former member of Alison Krauss’ Union Station has had two moments of extraordinary popularity for a bluegrass musician: 2000’s O Brother, Where Art Thou? soundtrack, on which he sang “I Am a Man of Constant Sorrow,” and “Hey Brother,” an unlikely 2013 hit with Swedish dance music producer Avicii.

New Orleans ragtime street band Tuba Skinny also plays Saturday, as do Critten Hollow, Danny Paisley & Southern Grass, and the Gibson Brothers. The festival winds down Sunday with Black Eyed Suzies — self-described as “the Bluegrass Ladies of Maryland” — as well as Tennessee quintet Blue Highway, Chicago duo Special Consensus, Boone, N.C., roots band Burnett Sisters, and Nashville quintet Appalachian Road Show. Gates open at 8 a.m. each day. Salem County Fairgrounds, 735 Route 40, Pilesgrove, N.J., delawarevalleybluegrass.org.

Kehlani

Kehlani had the biggest hit of their career last year with “Folded,” which was co-written with Philly producer Andre Harris and won two Grammys. The R&B vocalist celebrated with a performance at The Roots Picnic, and now they’re back for a headlining show in Camden on a tour that includes Durand Bernard, TheArti$t, Wahseel, and Dixson. 7 p.m., Freedom Mortgage Pavilion, 1 Harbour Blvd, Camden, freedommortgagepavilion.com.

Lily Allen performs ‘West End Girl’

Lily Allen struck a nerve with last year’s West End Girl, a song suite inspired by the dissolution of her marriage to actor David Barbour, that resonated big time with an audience all too familiar with shady doings by unfaithful partners. Earlier this year, the British songwriter, who has displayed a winningly wicked wit going back to her 2006 Alright, Still?, performed West End Girl album in order in a terrific, if brief, show at the Met. Sunday’s show was scheduled for the Xfinity Mobile Arena but moved to the Mann. 8 p.m., TC Pavilion at the Highmark Mann, 52901 Parkside Ave., highmarkmann.com.

Philly tribute to the Clash

Many, including me, have argued that the four sides of London Calling, the 1979 double album by the British punk band the Clash, add up to the greatest album of all time. One side each goes to a Philly band: Citizens Riot, No Good Crowd, the Big Trip, and 2 Tones Clash. Guests on this tribute show include Hannah Taylor, Spoon Ferguson, John Faye, Cowmuddy, Phil Dunn, and Adam Weiner of Low Cut Connie (also playing a Free at Noon in Ardmore on Friday.) 6 p.m., Ardmore Music Hall, 23 E. Lancaster Ave., ardmoremusichall.com

Slowey and the Boats

Fab Philly instrumental quintet Slowey and the Boats’ breezy, light-on-its-feet sound is built around steel guitarist Isaac Stanford. The band’s delightful Slowey After Dark swings sweetly, using the Hawaiian origins of Stanford’s instrument as a starting point. 2 p.m. Wissahickon Brewing Company, 3705 W. School House Lane, sloweyandtheboats.com.

Peter Hook & the Light

Bassist Peter Hook was a key player in Manchester, England, in the late 1970s and 1980s as cofounder of Joy Division, New Order, and Durutti Column. Since 2020, he’s played the music of Joy Division and New Order, with his bassist son Jack, who frees him up to sing. He’ll perform New Order’s 2001 album Get Ready, plus pull from the JD and NO catalogs. 8 p.m., Union Transfer, 1026 Spring Garden St., utphilly.com

Social Distortion

Longtime Southern California punk band Social Distortion is in fine form on Born to Kill, its first album in 15 years. Leader Mike Ness sounds refreshed after a battle with tonsil cancer, and the band is pushed hard by drummer David Hidalgo Jr., son of the coleader of Los Lobos. Social D’s fellow SoCal punks the Descendents and young Australian punks the Chats also perform. 8 p.m., themetphilly.com

Gary Clark Jr.

At Bruce Springsteen’s Music of America concerts in the spring, Gary Clark Jr. covered “Power of Soul” by Jimi Hendrix’s Band of Gypsys and Bobby “Blue” Bland’s Texas shuffle “Further on up the Road.” Those two songs hint at the range of the Austin-based Clark Jr., who has been Texas’ leading guitar hero since he gained nationwide renown with Blak & Blu in 2012. Dumpstaphunk and DJ Kurupt open. 8 p.m. Keswick Theatre, 291 N. Keswick Ave., Glenside, Keswicktheatre.com

Jeff Townes has had himself a Semiquincentennial summer. At The Roots Picnic, the West Philly-born and -raised DJ put on a turntablism clinic on Belmont Plateau. Then Townes teamed with Will Smith and The Roots to shut down the Philly 250th celebration on the Ben Franklin Parkway in the wee hours of the morning. Now he’ll display his musical mastery at a Longwood Gardens illuminated Fountain Party. 8 p.m., 1001 Longwood Road, Kennett Square, longwoodgardens.org.

New Zealand songwriter Aldous Harding is touring behind Train on the Island, the fourth album she’s recorded with PJ Harvey collaborator John Parish producing. The songs are in keeping with Harding’s reputation as an inscrutable, willfully strange songwriter but are also rock solid psychedelic folk tunes. Sam Burton opens. 8 p.m., Underground Arts, 1200 Callowhill St., undergroundarts.org.