Opeth are the latest band to be added to Classic Rock’s High Voltage Festival this summer.

The Swedish progressive death metallers, led by Mikael Akerfeldt, are celebrating their 20^th anniversary this year. High Voltage will be the only UK festival they play in 2010.

Opeth join a roster that also includes Heaven & Hell, Black Label Society, Foreigner, Asia, UFO, Gary Moore – and headliners ELP and ZZ Top.

Our stellar line-up runs across two days and three stages – Main Stage, Prog Stage and Metal Hammer Stage.

The line-up confirmed to date is as follows:

Main stage – Emerson, Lake & Palmer, ZZ Top, Foreigner, Heaven & Hell, Bachman Turner, Joe Bonamassa, Gary Moore, UFO, The Answer, The Quireboys, The Union…

Prog Stage – Opeth, Transatlantic, Asia, Dweezil Zappa Plays Zappa, Marillion, Argent, Steve Hackett, Focus, Pendragon, Uriah Heep, Magnum, Martin Turner’s Wishbone Ash, The Reasoning, Touchstone…

Metal Hammer Stage – Black Label Society, Down, Venom, Clutch, High On Fire, Audrey Horne, New Device, Lethargy, Orange Goblin…

The High Voltage Festival is set to take place in London’s Victoria Park on July 24 and 25.

Standard tickets are priced £135 (for weekend tickets) and £75 (for day tickets).

Tickets are available from www.highvoltagefestival.com or 24hr cc ticketline 0871 230 5582.

More bands will be added soon, so stay tuned to the Classic Rock website.