Ed Sheeran has revealed that he was high on MDMA when director Peter Jackson texted him to ask if he would write a song for 'The Hobbit: Desolation of Smaug'.
The 23-year-old singer-songwriter admits he decided to try the drug for the first time while on holiday in Ibiza, attending his producer Jack Gossling's wedding.
He told Rolling Stone magazine: "If I was ever going to try it, it would've been there.
"I thought the text wasn't real, because I was like, 'Is everything just great today?'"
The 'Lego House' hitmaker, who went on to write the track 'I See Fire' for the film, also spoke about his upcoming album, 'x', and claims he wanted "raw, honest songs from the heart."
He explained: "When you hear that Kesha-Pitbull song, you know it's a hit, but it doesn't make you want to cry or laugh or sit in a corner for five hours just repeating it."
Meanwhile, Ed also recently revealed one track from his album 'Don't' is about an ex-lover and singer who cheated on him in a hotel with a friend while he was downstairs.
He said: "It's 100 percent not about Taylor [Swift]. Taylor's one of these people that if you p*ss her off and she writes a song about you, it's not good news for you.
"I've never dated Taylor. I've dated a few singers, though."
Ed revealed he has played the song for Taylor and claims she told him: "Whatever happens, ever, between us as friends, I never want to p*ss you off that much."

David Walliams says 'Britain's Got Talent' is a "real life" 'Little Britain'.
The 42-year-old comedian often watched the ITV talent competition with his comedy partner Matt Lucas before becoming a judge, to help inspire characters for their sketch show.
Speaking on the red carpet at the launch of the new series yesterday (09.04.14), he explained: "We always used to watch it when we were doing 'Little Britain' to think, 'All these crazy people, who can we adapt as a character?' That's why I was obsessed with the show.
"Simon [Cowell] said to me years ago, when I'd just met him socially, before he asked me to do the show, he said, 'It's like the real life version of your show.' And it really is. That's why I love it. It's not like any other talent show because you've got no idea what's coming next."
David also reveals he thinks the show is at its best when the contestants are "eccentric".
He said: "We had an owl act on our show. Unfortunately, the owl didn't do anything. The man has about 30 owls and I go, 'Are you married?' He said, 'I don't need to, I've got owls!' So you start to wonder what happens with all the owls. I love it because of all the eccentrics!"
'Britain's Got Talent' returns on Saturday (12.04.14) at 7.15pm on ITV.

Marc Warren has joined the cast of 'The Musketeers'.
The 'Hustle' actor has signed up to play the Comte De Rochefort, a dashing aristocrat with a talent for sword fighting and a taste for adventure, in the BBC One drama's second series.
He commented: "I'm delighted to be part of the BBC's stylish and exciting take on the Dumas classic. Once I've overcome my fear of horses I'm sure it'll be a walk in the park."
On the surface, Rochefort seems like a charming and persuasive character, but as the series progresses his true nature and dark secrets are revealed. Only the Musketeers and their friends stand between him and a desperate act that will change all their lives forever.
The character replaces Cardinal Richelieu as the series' main antagonist as actor Peter Capaldi has left to star in 'Doctor Who'.
Jessica Pope, BBC's executive producer, added: "Adrian [Hodges, show creator] and I were thrilled to welcome Marc to the cast. He's a clever and mercurial actor who will bring danger and charm to the role of Rochefort in equal measure."
The star joins Luke Pasqualino ('Skins') as D'Artagnan, Tom Burke ('Great Expectations') as Athos, Santiago Cabrera ('Merlin') as Aramis and the Royal Shakespeare Company's Howard Charles as Porthos.
'The Musketeers' follows King Louis XIII's personal bodyguards who fight for honour and justice on the streets of 17th Century Paris.
Filming for series two is currently under way in Prague, following the success of the first series this January, which was the BBC's third highest-rating drama launch of the past decade.

'Hollyoaks' star Jesse Birdsall is backing Sandy Roscoe as Fraser Black's killer.
The actor's villainous alter-ego will be killed off in a major new 'whodunit?' storyline and he thinks Fraser's on-screen wife, played by Gillian Taylforth, should be the one to murder him.
Sandy and Fraser hit the rocks in the Channel 4 soap this week as her sons Joe and Freddie exposed some of the gangster's crimes.
Jesse told All About Soap magazine: "Personally I've always thought it should be Sandy, but that doesn't mean that's who the killer is.
"I love Gilly (Sandy) so much and we have a great working relationship. I've known her since I was about 12, so it has been a long time. When I left, there were a few tears.
"I suppose he's a pretty bad guy, and he did some pretty bad things, so I think it's probably right that he got his comeuppance in the end."
Jesse admits it hasn't hit him that he's left the show after wrapping filming on the Liverpool set recently.
He added: "I've really enjoyed it. I have to say, I have been there ten months and it feels like it has only been about two weeks.
"I've just packed up and left Liverpool and it seems as if I'm just off on a break at the minute - I don't feel like I've finished yet."
Meanwhile, Gillian is to leave 'Hollyoaks' as well later this year, but producers are leaving the door open for her to return.

Kate Upton says men will feel good about themselves after watching 'The Other Woman'.
The Sports Illustrated model hits the big screen alongside Cameron Diaz and Leslie Mann in the comedy which follows the three women on a mission to get revenge on their three-timing lover, Mark - played by Game of Thrones' Nikolaj Coster-Waldau.
Upton, 21, believes the film will appeal to men because most can leave feeling smug about being a faithful partner after watching cheating Mark on screen.
Talking on US chat show 'Jimmy Kimmel Live' on Wednesday (09.04.14), she said: "I think that when they go to the movie they'll feel better about themselves. They'll be like 'I missed Valentines Day but I'm not that bad'."
Jimmy replied: "You look good by comparison."
She said: "Exactly, exactly. Suddenly, their wives and girlfriends will be like 'I like you a lot better.'"
Upton - who is best known for appearances in the Sports Illustrated Swimsuit Issue - has her first big film part in the Nick Cassavetes-directed picture which was released in the US and UK this month.

Mae Whitman is in talks for 'The DUFF'. The 25-year-old actress is negotiating a role in the high school flick which follows a teenage girl who becomes determined to reinvent herself after learning that her 'friends' have labelled her DUFF, their des...

Reese Witherspoon laughed on the phone as she enjoyed a cool beverage following a trip to the salon in Brentwood, California. She sported a cute denim jacket with a black top and a leopard print skirt which showed off her tanned legs.

The Duke and Duchess of Cambridge left Prince George with babysitters as they attended a World War One Aviation commemorative event Blenheim, as part of their tour of New Zealand and Australia tour. Catherine was all smiles wearing a stylish blue trenc...

Rihanna enjoyed a cold beverage as she enjoyed the Clippers game in Los Angeles with her best pal Melissa Ford. The 'Pour it Up' singer showed off her legs in a sporty blue dress accessorized with chunky jewellery and styled her hair into big curls.

Eva Longoria looked engaged in deep conversation on her phone as she headed out for a grocery shop in Hollywood. The actress looked stylish in a simple grey vest and blue skinny jeans, and sported a new fringed hairdo.

Anne Hathaway covered up in a boldly printed wrap coat and ripped jeans whilst out in New York. the 'Les Miserable' actress accessorized with a quilted Chanel bag and dark sunglasses.

Kaley Cuoco looked summery in white brocade top with blue and white lace shorts as she attended the 'Authors Anonymous' premiere in Westwood, California.