From Chubby Checker to Pavarotti, musical programming fills Louisiana Public Broadcasting’s Summerfest membership campaign, which runs through Aug. 24.

All of the money raised during the campaign is used to purchase and create the programming which airs throughout the year on the six-channel LPB network.

Thirteen-year-old musical prodigy Ethan Bortnick takes the stage at 7 p.m. Wednesday for “Live in Concert: The Power of Music.” A pledge of support for LPB can get donors tickets to Bortnick’s Oct. 24 Baton Rouge concert.

At 7 p.m. Thursday, LPB features two behind-the-scenes specials for the popular “Doc Martin” series.

“Jimmy Van Heusen: Swingin’ with Frank & Bing” at 8 p.m. Saturday tells the story of the Oscar winner responsible for some of the most memorable songs in movie history. At 9:30 p.m., see “’70s & ’80s Soul Rewind” featuring some of the most popular acts of those two decades.

“Celtic Woman: Emerald” at 6 p.m. Sunday spotlights the first ladies of Irish music in concert. Tickets to their 2015 concert in New Orleans are one of the thank-you gifts for donors. At 8 p.m., Academy Award winner Susan Sarandon hosts “Return to Downton Abbey,” a look back at the first four seasons of the series and a sneak peek at Season 5, which premieres in January.

“Alive! in America’s Delta: Alligator: King of the Bayou” at 7 p.m. Monday shows how scientific research has restored the population of the state’s largest reptile. At 8 p.m., “Bayou Bartholomew” tells the story of the nation’s longest bayou, which runs through south Arkansas and north Louisiana.

The late, great Luciano Pavarotti is profiled in “Great Performances: Pavarotti: A Voice for the Ages” at 7 p.m. Wednesday, Aug.

The network will have a special south Louisiana night on Thursday, Aug. 21. At 7 p.m., see “I Always Do My Collars First,” a program that follows four dynamic Cajun women through their daily lives. At 8 p.m., “Atchafalaya Houseboat” is based on Gwen Roland’s book about her escape from civilization to live in the swamp. Then at 9 p.m., “Against the Tide: The History of the Acadian People” traces the Acadian cultures evolution into Cajun culture.