Hard-Fi and Nine Black Alps are set to play free, secret gigs this week.
The bands are taking part in Street Gigs organised by T Mobile, which as previously reported, ape Flashmobbing by keeping the location of the show secret until the last possible moment.
Nine Black Alps will play Birmingham on November 24 and on November 25 in London, while Hard-Fi play the capital on November 26.
Fans can register for the shows by going to www.t-mobile.co.uk/street and will be texted the gig details ahead of show time, although space will be limited.document.write(unescape("