According to the Woodstock web-site, the ISB's set at this legendary festival consisted of three songs 'Catty Come' (believed to be a misheard line from 'The Letter'), 'This Moment' and 'When You Find Out Who You Are', though in Robin's sleeve notes to the recent Elektra CD reissue of 'U' he says that he also performed 'Invocation' to 'the muddy hordes of Woodstock'.