Kanye West debuted songs from his new album at Facebook's headquarters earlier this week.
The rapper, who was wearing a suit, performed acapella versions of 'Lost In The World/Chain Gang' and 'Mama's Boyfriend'.
West was watched by an audience of Facebook employees, who greeted the new songs enthusiastically.
In a message on his blog, West thanked the audience, describing their energy as “so electric, so genuine”.
“The energy was so inspiring I had to keep going!” he added.
West's new album, thought to be entitled 'Good Ass Job', is due to be released in September.
'Lost In The World/Chain Gang':
'Mama's Boyfriend':
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