Aphex Twin, Goldfrapp, Kate Nash, Serj Tankian, Redd Kross and Adele have joined the lineup for the 2008 Coachella Valley Music & Arts Festival, to be held April 25-27 at Empire Polo Field in Indio, Calif.

As previously reported, Jack Johnson, Portishead and former Pink Floyd
principal Roger Waters will headline this year's Coachella, with the Verve, Kraftwerk, Death Cab For Cutie, My Morning Jacket, Spiritualized, Cafe Tacuba and the Raconteurs near the top of the bill.

Tickets for the festival are currently on sale via Ticketmaster. Three-day general admission passes cost $269 (plus service fees), while single-day tickets cost $90. Coachella is the brainchild of Los Angeles-based concert promoter Goldenvoice, which is a subsidiary of AEG Live.

In related news, music fans on the East Coast shouldn't expect to see any acts added to the lineup to the first All Points West Music & Arts Festival, to be held Aug. 8-10 at Liberty State Park, just across the Hudson River from lower Manhattan. Radiohead and Jack Johnson will headline All Points West, with Underworld, Kings Of Leon, Cat Power, the Roots, the New Pornographers and Girl Talk, among others, rounding out the bill.

"That's what it's going to be right there," Goldenvoice president Paul Tollett tells Billboard.biz. "That show is half the size of other festivals."

Other artists performing include Rodrigo y Gabriela, Youssou N'Dour, Animal Collective, Andrew Bird, Michael Franti & Spearhead, Metric, CSS, Chromeo, the Go! Team, Amadou & Mariam, the Black Angels, Sia, the Felice Brothers, K'Naan, Jason Isbell, Grace Potter and the Nocturnals, Alberta Cross, the Virgins, Black Kids and Mates Of State, Duffy, Forro In The Dark, Nicole Atkins, Juana Molina, Little Brother, Rogue Wave, Neil Halstead and Your Vegas.

Tollett says ticket sales for the All Points West festival are "going good,
as you would hope a New York one would." Single-day tickets are $89, while three-day passes will sell for $258. A portion of the proceeds will benefit Friends of Liberty State Park, which is working to make environmentally friendly improvements to the venue.