As anticipation for her Fantasea mixtape builds, Azealia Banks releases another track from the tape.

Following last week’s ‘Nathan,’ Banks turns in another collaboration, albeit one with a midtempo, bubbling feel. (Update: the backing track is a re-working of Ikonika’s ‘Heston.’)

‘Neptune’ features grime star Shystie, whose rapid-fire delivery is the perfect complement to that of Banks; she even works in a reference to Banks’ ‘Liquorice.’ For her part, Banks croons the chorus from what sounds like 20,000 leagues under the sea, perfect for the mermaid-adorned mixtape.

The oft-delayed Fantasea could be released as soon as tomorrow, according to speculation by Pitchfork.