Astrobiologist app icon

Astrobiologist

A Scifi adventure filled with VR/AR, robots, third stream jazz music, and exploration. Listen or read.

A near-future science fiction mystery in 50 chapters. Read it on the page or listen to the writer narrated audiobook with an original third-stream jazz score, all in one app for iPhone and iPad.

The story

D works as a Programmer-Operator. From an augmented-reality chair in a co-op apartment that used to be a school, they look after the robots in the Cultivars, the sealed warehouse farms that feed the cities. It's steady, quiet work, until a camera feed shows something growing on a warehouse wall where nothing should grow.

The growth leads D into an online world called Astrobiologist. It has singing Jellytoads, white crabs that keep showing up, a locked programmer panel and a signal at 830.609 hertz. As D works on the puzzle, the game starts to feel less like a game. Then one day D links in and finds a place that feels completely real.

The book mixes a hopeful near future with first contact and a mystery. It's about curiosity, community and finding wonder in life you didn't expect.

Read it or listen to it

Read

  • Every chapter in a clean, distraction-free reader
  • Adjustable text size
  • Jump to any chapter from the side index
  • Picks up where you left off

Listen

  • A full writer narrated audiobook
  • An original third-stream jazz score
  • Plays in the background, with Lock Screen and Control Center controls
  • CarPlay Audio support
  • AirPlay to speakers and TVs
  • Marks the chapters you've finished

Made for reading

  • Light and dark mode
  • Works with VoiceOver, Voice Control and Larger Text
  • Switch between reading and listening with one tap
  • No ads, accounts or tracking

Original music

The audiobook comes with an original score of Third Stream chamber jazz for Alto Saxophone, Tenor Saxophone, Guitar and Upright Bass.

25 interstitials

  • Short compositions that sit between the chapters

7 full compositions

  • Complete pieces that follow the final chapter

Printable scores

  • Every part, viewable in the app with Save and Print

Music scores

The sheet music from the book is shared for educational use. Students, teachers and ensembles are welcome to print, study and play it. If you perform any of it in a concert, please let me know where and when.

Astrobiologist

Alto Saxophone, Tenor Saxophone, Guitar and Bass

Bird Book

Lead sheets in concert pitch and for transposing instruments

© 2026 Robert Linnemann. All rights reserved. PDFs open in your browser.

Screenshots

Contents

Show all 50 chapters
  1. 0 Introduction
  2. 1 Damn good peppers
  3. 2 Conversations in music
  4. 3 A day like any other
  5. 4 An anomaly
  6. 5 A surprise visit
  7. 6 Food on foot
  8. 7 Half a zorch
  9. 8 Coho salmon
  10. 9 A connection
  11. 10 830.609 hertz
  12. 11 A simulacrum
  13. 12 The drone-ship Ada
  14. 13 Mail run
  15. 14 Space elevator
  16. 15 A breakthrough
  17. 16 A few squashed peppers
  18. 17 Momentary euphoria
  19. 18 Scale
  20. 19 Booked and mocked
  21. 20 An experience
  22. 21 Toys come in the mail
  23. 22 Near exploration
  24. 23 Robo Turbo Taco
  25. 24 Wisdom tree hostel
  26. 25 Griffith Spaceport
  27. 26 A night on the town
  28. 27 Lemons Books
  29. 28 Palos Verdes Arcology
  30. 29 An indoor forest
  31. 30 Reckless delivery
  32. 31 The Dude Ranch
  33. 32 Art luminaries
  34. 33 Babylon
  35. 34 Search and you shall find
  36. 35 A new world
  37. 36 A message
  38. 37 If this is hell it is extremely creative
  39. 38 Sever the connection
  40. 39 The scuffle
  41. 40 Attack
  42. 41 Safety
  43. 42 Back to the bookstore
  44. 43 Back home
  45. 44 Gebrauchsmusik
  46. 45 Answers and more questions
  47. 46 Shakespeare folio of 1623
  48. 47 Sparring
  49. 48 Finally some answers
  50. 49 Epilogue

Thanks

This book took a long time to write and record. I had some fierce collaborators. Thanks to Eli Wheeler for producing all of the audio. We spent many a long night in Zack's van. Thanks Zack and Zoe for your support. A special thanks to 'Robert's Kyles Jazz Logic Laboratory': Cori Arnold (bass), Kyle Merrifield (tenor sax), Kyle Williams (guitar), the author (alto sax). Special thanks Jon Page for reading and giving timings to fix the audio tracks. Thanks to Mitchell Jones for mastering and editing. Thanks to James Taylor for being the first to fully read the book (an early draft at that). The music was recorded at Blue Butler Studios, with great audio support from Paris Butler and Phoenix Alexander. Thanks to everyone who listened to the early drafts and sent feedback. Thanks to everyone that wanted to hear progress or cheered me on.

The icon is D's robot made from felt by the author. This app was also created by the author. AI not used for writing or music. It was used in the programming and for the media materials.

Accessibility

Seeing

  • VoiceOver labels on every control, and the chapter index is adjustable with a swipe
  • Larger Text: the interface follows your system text size, and the reader goes up to 40 pt on top of that
  • Dark mode throughout
  • Text meets at least 4.5:1 contrast in both light and dark mode
  • Read chapters are marked with a strikethrough when Differentiate Without Color is on

Hands-free

  • Voice Control: say a control's name, like “Tap Play” or “Tap Next Chapter”, or a chapter's name to play it
  • Lock Screen, Control Center, CarPlay and headphone controls for the audiobook

Hearing and motion

  • The full text of every chapter is in the app, so the whole book can be read instead of heard
  • No flashing or autoplaying animation; the Mac page-turn effect stays off when Reduce Motion is on

Support & feedback

Have a question, found a typo, or just want to say what you thought of the book? Email for feedback.

Requires iOS 18.0 or later. Works on iPhone and iPad.

Privacy policy

Astrobiologist does not collect, store, or share any personal data. There are no accounts, ads, analytics, or third-party tracking. Your reading position, listening progress, and text size are saved only on your device and are removed if you delete the app.

Last updated October 29, 2026. Questions? See Support & feedback.