The Stone Roses were announced as the first headline act on 8 November 2011 . On 21 February 2012 , one week before the final release of tickets , 9 acts were revealed via the T in the Park official Twitter account . The acts announced were : Noel Gallagher 's High Flying Birds , Florence The Machine , The Maccabees , The Horrors , Miles Kane , The Vaccines , Maverick Sabre , Frank Turner and Two Door Cinema Club . Another announcement on 23 February revealed the remaining two headlining acts , Snow Patrol and Kasabian . Other acts revealed at the same time included Jessie J , David Guetta , Kaiser Chiefs , The Darkness , Calvin Harris , Skrillex and Elbow . Swedish house Mafia were also added to the line-up , making it their last appearance in Scotland before they split up . As usual , T in the Park continue to reveal more acts as the event nears . On 23 April the lineup poster was updated , some new additions included Hilltop Hoods and Fun. , however Mastodon disappeared from the lineup , leading to speculation they have cancelled their appearance ( this speculation was officially confirmed on 24 April ) . On 27 April , Keane were added to the lineup . On 1 May , Sub Focus was added to the Saturday lineup . As of 1 May 2012 a total of 110 acts have been announced , in contrast 171 acts completed the T in the Park 2011 lineup
T in the Park 2011
T in the Park 2011
T in the Park 2012