A Billion Heartbeats is the sixth studio album by English indie rock band Mystery Jets.

[2] On 17 September 2019, the band announced the postponement of the album's release and tour due to the hospitalisation of singer Blaine Harrison.

[3] The band were forced to reschedule the tour again to November–December 2020, due to the coronavirus pandemic, however the album release still went ahead as planned, but only digitally.

A Billion Heartbeats received positive reviews from contemporary music critics.

"[11] DIY Magazine reviewer Elly Watson agreed, calling the album a "rallying call for change and action", whilst also positing that the record will become an "undoubtedly influential album.