Star of 'The Village' and 'My Mad Fat Diary' takes on the role of frontman for new video
List of DJs and dance acts performing at Slam Tent is also released
Brookes died in August from a brain tumour
Members of Mumford & Sons, The Vaccines, Joy Division and Chemical Brothers also sign the instrument for the Brain Tumour Charity
'I’ll be thinking of Jon Brookes in every line of every song,' says Charlatans singer Tim Burgess
Charity gig will take place at London's Royal Albert Halll on October 18
Band's drummer died in August, aged 44
Brookes passed away last week at the age of 44
Marr joins Charlatans frontman Tim Burgess in remembering the drummer, who died today (August 13)
Band pay tribute to 'a brilliant drummer, an inspiration'