Karen O is releasing a solo album this September.
The music was written between 2006 and 2007 and is described as a ''collection of lo-fi, bedroom recordings''.
Karen explained: ''When I was 27 I crushed a lot. I wasn't sure I'd ever fall in love again. These songs were written and recorded in private around this time.
''They are the soundtrack to what was an ever continuing love crusade. I hope they keep you company on yours.''
A limited vinyl edition of the album will be available pre-release with artwork featuring Karen's own drawings and handwritten lyrics.
Julian commented: ''So excited, lucky and proud to be involved with such a classic album - I just wanna listen to it all day. Karen is an all-time great.''
The Yeah Yeah Yeahs' last album, 'Mosquito', was released in 2013 and the indie rockers have not yet announced plans for new music.
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