Coldplay's Chris Martin has hidden his handwritten lyrics to their new album "Ghost Stories" in libraries around the world. Can you find them? One of the hidden envelopes contains tickets to their "Ghost Stories" tour performance at Royal Albert Hall in July - details here!

According to Rolling Stone, Coldplay has hidden Chris Martin's handwritten lyrics to their "Ghost Stories" album's songs in libraries worldwide. Coldplay is posting clues to their whereabouts via their Twitter account today.

One of the hidden nine envelopes contains a golden ticket, which will allow the finder and a guest to fly to London and see Coldplay perform at Royal Albert Hall in July, one of a handful of scattered tour dates.

Better check their Twitter page now! One of the envelopes has already been found by a Coldplay fan in New Mexico.

"Ghost Stories" is Coldplay's sixth album and will be released on May 19. Tickets for the "Ghost Stories" tour will be emailed exclusively to subscribers to the Coldplay mailing list, NME reports.

Their tour dates currently include:

New York Beacon Theatre, USA (May 5)

Los Angeles Royce Hall, USA (May 19)

Glasgow Green, Radio 1's Big Weekend, UK (May 24)

Paris Casino de Paris, France (May 28)

Tokyo Dome City Hall, Japan (June 12)

London Royal Albert Hall, UK (July 1)