Portraits Of Astronauts is The Tannens' debut album. Writing technically began in 2023, with a handful of songs undergoing several revisions over a period of many months. However, the bulk of the writing and the recording process itself took place between October 2025 and March 2026.

For much of this time, the boys were sequestered in their newly-built home studio in East Sussex. This allowed them the freedom to experiment with different production techniques as they continued to explore what the band's overall sonic identity was going to become.

The album features an intriguing cast of guest contributors including a Ukranian string quartet, a Nigerian gospel choir and a beat-boxing ferret called Fifi. The latter was persuaded to peform by bringing her favourite toy (a squeaky tennis ball) into the vocal booth. The hissing noises she subsequently produced were then chopped up and arranged into rhythmic and percussive elements, which can be heard on the track Strained Relations.

Mastering duties were handled by Jasper Ward at AIR Studios in London, and the finished product was released digitally on Friday 1st May 2026.