The Boss's 18th LP comes out on January 13
Rage Against The Machine guitarist says that title-track 'High Hopes' "was in my wheelhouse of riffage"
Ron Aniello says working on The Boss' 18th album was 'unusual'
‘High Hopes’ was available for a short period of time on Amazon’s mobile website
Coldplay's Capital Summertime Ball performance won the honour in 2012
The document went for tens of thousands over estimate to an unknown buyer
Document features Springsteen's notes while working out the lyrics
US artist's 18th studio album features Tom Morello collaboration and a Suicide cover
US star rumoured to be releasing follow up to 2012 album 'Wrecking Ball' in January
Release info was leaked by Danish music mag Wimp