Kendrick Lamar is holding a lyrics contest tonight

Kendrick Lamar has announced a lyrics contest on Twitter this evening, beginning at 00:00 GMT.

Following last week's release of 'untitled unmastered.', fans are encouraged to answer questions relating to the eight songs on the album. The first person to reply correctly (and using the hashtag #untitledlyrics) will win a Top Dawg Entertainment bundle that includes a t-shirt, hat, and a backpack. Of course, the competition comes with a caveat: "get your copy now and listen to the lyrics closely because these will not be easy!"

For more details, check out the poster above. Listen to Kendrick Lamar's 'untitled unmastered.' below.

Kendrick Lamar's 'untitled unmastered' is out now through Aftermath/Top Dawg Entertainment/Interscope (buy).