50 Cent fans have suffered long enough with all the delays of his long-awaited 'Street King Immortal' album, but there's been no heartache over his upcoming effort, 'Animal Ambition.'

The now-independent Fiddy has kept his promise of delivering a new track every week, and last night, he debuted the latest cut off the project.

'Irregular Heartbeat' sees the Queens veteran link up with his protege Kidd Kidd and reunite with his former nemesis Jadakiss, which makes this collaboration even more exciting. It's also the most sinister track we've heard so far as the three MCs issue lyrical threats that'll leave you shaking in your boots (word to B.I.G.).

"You p----, you scared, I can hear your heartbeat / Why the f--- would you come around here? I can hear your heartbeat," 50 spits with a subdued menace over the sparse, spine-chilling production from G Rocka & Medi. Between this, 'The Funeral' and 'Hold On,' it's safe to say that Curtis Jackson is back with that quality street music we've been missing.

Featuring further appearances from Styles P, Yo Gotti, Trey Songz and Prodigy, 'Animal Ambition' is due in stores June 3. 'Irregular Heartbeat' is available to buy on iTunes.

Listen to 50 Cent's 'Irregular Heartbeat' Feat. Jadakiss & Kidd Kidd

[via HipHop-N-More]