John Brunsfeld

Why I built Main Act

I'm a developer who plays music. For years I jammed with my bandmates and practiced alone, and every tool I tried either entertained me or overwhelmed me — nothing told me what to work on today, or whether I was actually getting better. So I built Main Act for myself and the musicians I play with: daily prescribed practice across the five things a working hobbyist actually cares about — studio mixing, live sound, vocals, songwriting, and repertoire — with real-time feedback from the browser itself.

Why I'm sharing it

My bandmates started using it. Then their friends did. It was working — not because it was flashy, but because it treated practice the way a good teacher would: here's what you do today, here's why, here's how you know it worked. So I'm opening it up.

My promise to every user: Main Act will tell you what to practice, listen to you while you do it, and be honest about whether you're getting better. No vanity points. No bloated library to browse. No karaoke pretending to be training.