What happens when a developer with zero experience in AI music generation decides to build a SaaS in two weeks?
You get a working product with payments, a personal cabinet, and Suno V5.5 in production.
The project: hitdlaciebie.pl, a client SaaS that generates personalized songs in Polish. You describe who the song is for and the occasion, AI writes the lyrics and sings a full track, the MP3 lands in your personal cabinet.
Here is how it happened
Before writing a single line of code, I did research. Connected four music APIs, ran identical prompts through each, and built the spec around what actually worked. Suno V5.5 won on vocal quality and Polish language handling.
Then the pipeline:
- Step 1. Gemini 2.5 Flash generates a raw draft of the lyrics (high temperature, fast, creative)
- Step 2. Claude Sonnet 4.6 polishes the draft (low temperature, structure, rhyme quality)
- Step 3. Suno V5.5 sings the full track and returns an MP3
Two LLMs in sequence for one task. Not because it is fancy, but because draft quality and final quality require different temperature profiles and different strengths.
Payments and delivery
Payments run through Shopify. After purchase, a webhook hits my API, tokens are credited automatically, and song generation starts. No manual steps, no Make.com, no n8n β just Shopify calling my endpoint.
Users get a personal cabinet: token balance, full song history, permanent access to every track. Songs live on the client's VPS, no expiring CDN links.
The product is live. Three free demos per user, then token-based access.
Development setup
Developed in VS Code in two weeks with a multi-LLM setup. GPT-4.5 wrote code fast. Claude Sonnet 4.6 handled refactoring and kept specs and docs in sync with what was actually built.
Basic SEO is in place: sitemap, robots.txt, and llms.txt so the site is visible to both search engines and LLM crawlers.
If you have solid programming fundamentals and know how to work with LLMs, the domain does not matter. You can build anything.
Tech stack
Next.js 14
TypeScript
PostgreSQL
Suno V5.5
Gemini 2.5 Flash
Claude Sonnet 4.6
OpenRouter
Shopify
Resend
VPS Frankfurt
GitHub Actions CI/CD