Linked by their joint subscription program the Premiere Marquee Club, Nederlander’s Greek Theater and Live Nation’s Gibson Amphitheater announced their summer/fall concert series with a mix of legacy acts and adult contemporary pop, with a few rockers thrown in for good measure. Highlights include a 40th anniversary celebration of Neil Diamond’s live double album “Hot August Night,” with Diamond playing the Greek in August, with the specific date yet to be announced.Other acts include Angeleno rockers Los Lobos, kicking off the Greek Theater season with a Cinco de Mayo bill that includes Neko Case & Alejandro Escovedo and fellow L.A. natives X. Other cross-generational acts who will grace the Greek’s outdoor stage include the funky triple bill of WAR, Tower of Power and the Average White Band (May 26), a “Summer Soul Jam” of the Stylistics, Brenton Wood, the Chilites and others (June 9), ’80s throwbacks the B-52s paired with Squeeze (June 30), old-school soul crooner Al Green (July 19), rockers REO Speedwagon with Styx and Ted Nugent (May 6), Chicago and the Doobie Brothers (July 15), Ringo Starr & His All Starr Band that includes Todd Rundgren (July 21), Joe Cocker/Huey Lewis and the News (Aug. 15) and never-say-die supergroup Crosby, Stills & Nash (Sept. 7). On the more contemporary front, the Greek will also showcase Broadway singer-actress Kristin Chenoweth (May 12), pop-jazz trumpeter Chris Botti (June 2), quirky singer-songwriter Regina Spektor (Aug. 14) and Colbie Caillat paired with Gavin DeGraw (Aug. 19). Gibson’s programming is accented by a heavily Latin skew, kicking off with Show En Vivo on May 12 and continuing with Conjunto Primavera Y Los Rieleros Del Norte (June 23), Venezuelan singer-songwriter Franco De Vita (June 24), banda/nortena star Jenni Rivera (Sept. 7), Mexican pop sensation Marco Antonio Solis (Sept. 22), ranchera kingpin Vicente Fernandez (Nov. 9-10) and Mexican popster Christian Castro (date tba). Gibson’s non-music acts will see Larry the Cable Guy and Bill Engvall unleash their brand of blue-collar humor on Oct. 11, while Gabriel Iglesias will bring his Stand-Up Revolution Tour to the venue Dec. 28.