She has just come from a production meeting for her forthcoming world tour, fretting about the set list, sight lines and how to get her piano to the right part of the stage at the right time.Before that, when she woke up, she was immediately gripped with anxiety about something she said last night (even though it was only using the word ‘interjection’ when she meant ‘injection’).But then the one thing she doesn’t need to worry about is how that career is going.It is Grammys weekend when we meet, and although Swift is attending rather than performing, she is still going to be the centre of attention. She is the only artist ever to sell more than a million first-week US copies of three separate albums – Speak Now in 2010, Red in 2012, and 1989, released in October, which racked up the biggest first-week American sales since 2002 and went to number one around the world, including the UK, where it was the best-selling album by an international artist last year.
‘If I have an opinion on something, I act accordingly – and I believe music is valuable.’ She ponders whether she’ll be the last person ever to sell this many records.
‘I worry about everything all the time,’ she says with a grin.
‘We could do our entire interview me telling you how many things I’ve worried about since breakfast.
Despite knowing her height (5ft 10in), I find her taller than I expected and slimmer, too.
Swift has ordered in coffee, apologising for the lack of tea (‘You’re British! ’) and peppers conversation with first-name references to her famous friends.