Fast-rising a cappella quintet Pentatonix, pictured here at a sold-out Riverside Theater show in February, will return to Milwaukee as one of the Big Gig’s 76 ground stage headliners. Credit: Sara Bill

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Up-and-coming a cappella act Pentatonix, sister pop rock duo Tegan and Sara, former "American Idol" champ Scotty McCreery and hip-hop stars B.o.B.,Nas and Ludacris are just six of the 76 ground stage headliners revealed Wednesday for Summerfest 2014 in Milwaukee.

The slate of Summerfest artists is typically diverse, even within individual genres: dance-friendly electronic acts alone span from seminal '80s group New Order to mash-up DJ Girl Talk to former "Jersey Shore" star Pauly D.

For world music enthusiasts, there's Ziggy Marley and Niger-born singer-songwriter Bombino. Country lovers can see Kip Moore and the Nitty Gritty Dirt Band. The Fray, Neon Trees and A Great Big World have been booked for pop-rock fans. Folk-rock followers have the Head and the Heart and Ray LaMontagne to look forward to.

Several headliners have been around for decades, including Bonnie Raitt, Michael McDonald, Melissa Etheridge,REO Speedwagon and Joan Jett & the Blackhearts. And Summerfest will feature some buzz-generating new acts before they play Lollapalooza in Chicago Aug. 1-3, including South African band Kongos, folk revival act Delta Rae, Australian singer-songwriter Vance Joy, fun. side project Bleachers, and San Fermin, an orchestral indie rock group featuring Milwaukee natives Rae Cassidy and Tyler McDiarmid.

The Summerfest 2014 ground stage headliners, as first reported Wednesday morning by USA Today, include:

Pentatonix

B.o.B.

Nas

Ludacris

the Neighbourhood

Tegan and Sara

Five Finger Death Punch

Scotty McCreery

St. Lucia

Kansas

Atmosphere

Jake Miller

Matisyahu

Kip Moore

SoMo

Fitz and the Tantrums

Jake Bugg

Kitten

DJ Pauly D

REO Speedwagon

.38 Special

Ray LaMontagne

Brand New

A Great Big World

The Fray

Rise Against

Ziggy Marley

O.A.R.

Switchfoot

Cheap Trick

Walk Off the Earth

ZZ Ward

Michael McDonald

Girl Talk

Bonnie Raitt

Blackberry Smoke

the Head and the Heart

Neon Trees

Timeflies

New Order

Umphrey's McGee

Kool and the Gang

David Nail

Melissa Etheridge

Delta Rae

Best Coast

Rusted Root

Clay Walker

Yonder Mountain String Band

Nitty Gritty Dirt Band

Robert DeLong

Los Lonely Boys

San Fermin

Bleachers

Dennis DeYoung and the music of Styx

the Airborne Toxic Event

Moon Taxi

the Hold Steady

Kopecky Family Band

Bombino

the Crystal Method

Cowboy Mouth

Crowder

Foy Vance

Wild Cub

Wild Feathers

Saints of Valory

Joan Jett and the Blackhearts

Kongos

Bad Suns

the Wailers

James Hunter Six

Ben Harper and Charlie Musselwhite

George Thorogood and the Destroyers

Taj Mahal Trio

Trombone Shorty & Orleans Avenue

Performance dates, times and stage locations — as well as additional ground stage headliners — will be announced in the coming weeks.

Advance general admission tickets are on sale now at summerfest.com, including $9 weekday tickets (prior to 4 p.m.), $16 single day tickets, and three-day passes for $42. Pick n' Save stores across the region are also selling 11-day passes April 15 through June 1 for $70 each.

Ticketholders for Marcus Amphitheater shows during Summerfest also will have access to the ground stages. Previously announced Marcus concerts include: Bruno Mars with opener Aloe Blacc, June 25; Lady Gaga with Crayon Pop, June 26; Brad Paisley with Darius Rucker, June 27; Outkast with Gary Clark Jr., June 29; Dave Matthews Band, July 2; Zac Brown Band, July 3; Motley Crue with Alice Cooper, July 4; and Fall Out Boy and Paramore with New Politics, July 5.

Three more Marcus Amphitheater shows have yet to be announced.

Summerfest runs from June 25-29 and July 1-6.

The Big Gig lineup wasn't the only major music festival news Wednesday morning.

Lollapalooza revealed its 130-act lineup, featuring Lorde, Eminem, Skrillex, Calvin Harris, Kings of Leon, Arctic Monkeys,Childish Gambino, Outkast and more.

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