(nowmagazine.co.uk) - Justin Timberlake says recording a song with Madonna is one of his biggest achievements.The singer collaborated with the music legend, 50, on the track 4 Minutes earlier this year.'Working with her was definitely a dream of mine,' he reveals.'And when it came to actually doing it...It was everything you'd think it would be!
'It was great and it was bad and it was cool and it was tedious sometimes and it was fun and we went down into the valleys together and we came out on top of mountains.'Justin, 27, says the experience brought them closer.
'We had a really good time,' he tells Hello! 'And I'm now very happy to be able to call her a friend.
'She's a really, really special person.'