Conversation so far:
what was Rostam Batmanglij departure from the band Vampire weekend?
on January 26, 2016 that Rostam Batmanglij had departed the band
Why did Rostam Batmanglij leave the band Vampire Weekend?
Rostam Batmanglij left to pursue solo projects

Question: When did they sign with columbia records?
Self-contained rewrite: When did the band Vampire Weekend sign with columbia records?