November 24, 2025
Tiny tunes, giant comment war
Show HN: Cynthia – Reliably play MIDI music files – MIT / Portable / Windows
Tiny MIDI player melts hearts, sparks “portable” beef
TLDR: Cynthia is a tiny Windows app for playing classic MIDI files with slick controls and 25 sample tracks. Commenters praise its size but argue over the “portable” claim via Wine and report 4K lag, while others want instrument input and real cross‑platform support—making it a nostalgic yet debated launch.
The internet just rediscovered MIDI with Cynthia, a tiny Windows app that promises reliable playback of those classic digital music files from the ’90s. It’s stuffed with party tricks—speed from turtle-slow to 10x, jump-anywhere progress bar, volume boost, playlists, even Xbox controller control—and ships with 25 sample tracks for instant nostalgia. The Show HN crowd hit play—and then hit the comments.
Strong feelings exploded over one word: “portable.” One commenter snarked that calling it portable just because Wine (a tool that lets Windows apps run elsewhere) exists “defies logic,” while others rallied around its tiny download as a refreshing antidote to today’s Electron bloatware. But the honeymoon wasn’t perfect: a 4K-screen user claimed the interface gets laggy and “gobbles CPU,” poking holes in the lightweight myth. Cross‑platform dreams collided with reality too—yes, it can be compiled for many systems, but MIDI drivers might be the real boss battle.
Meanwhile, the memes and music nerd jokes flowed. “Finally, don’t have to remember the UMRN for Camptown Races,” quipped one, and another dropped the inevitable pun: “music to my ears.” Wishlist energy is high—especially for MIDI instrument input—as the community debates whether Cynthia is the anti‑bloat hero or a Windows‑only wonder with rough edges. Either way, the comments stole the show.
Key Points
- •Cynthia is a Windows desktop MIDI player supporting .mid, .midi, and .rmi files in formats 0 and 1.
- •It offers folder and .m3u playlist playback, with real-time speed (10%–1,000%) and volume (up to 200%) controls.
- •Includes extensive visualization and control panels for tracks, channels, notes, and piano, plus lyrics and volume bars.
- •Supports up to 10 simultaneous MIDI devices with per-device time shift (-500 to +500 ms), volume, and channel routing.
- •Provides portable binaries and Pascal source code (Delphi/Lazarus), along with 25 built-in sample MIDI files.