How this song came to be
License: CC-BY-SA 4.0 (opens in a new tab)
It has been almost two years since I last created my own music and as I wrote back then: “I stopped creating music because I’m still waiting for a local solution as I definitely won’t pay for a subscription to gimped artificial intelligence.”
The time has finally come: “Sunday” was produced exclusively with local and open source software (opens in a new tab), no subscriptions or internet required anymore. The magic comes from the open source foundation model Ace-Step-1.5 (opens in a new tab) and for this song in particular I worked with ComfyUI (opens in a new tab) as the user interface.
Created on the 10th and 11th of February 2026 respectively, the songs themselves are an experiment as I’m still learning and trying to understand how everything works. At the time of writing, Ace-Step-1.5 has been out for a little over a week and I spend every free minute with it, having produced already some 100 songs. Client integration is still in early development and a lot of features are not (easily) available yet. Technically, I export everything as FLAC but for publishing here that’d be overkill.
The song structure, style, tempo, key scale and other details were defined by myself and I have co-written the lyrics together with DeepSeek. The point: just having fun, nothing more. Both versions are deliberate choices and I like them a lot — including all their imperfections. This is only the beginning, after all.
On the hardware side, I still have my old PC. However, in the meantime I have upgraded my RTX 3060 (12GB) to an RTX 5060ti (16GB). This makes creating music incredibly affordable already today, paving the way for everyone to create their own music on their own terms.
Read the lyrics
Sunday feels like a slow exhale. Sunglasses on, everything soft around the edges. A summer breeze pulls at my shirt. Underneath the city lights, I feel weightless.
A saxophone hums somewhere in the warmth. Bass notes drift like footsteps down the sidewalk. Everyone swaying, no hurry in their motion. Just the pulse of the afternoon holding us here.
Night out. We’re going to glow from within. Funky and soulful, a quiet kind of fire. Sunday afternoon, breathing in the alive feeling. Jazz in our step, hip-hop in our veins.
Sidewalk café, a record turning slow. Old-school sound wrapping around the moment. Friends nearby, laughter floating like dust in light. No one carrying anything heavy today.
The sun sinks, the city begins to shimmer. Streetlights blink awake one by one. From day’s ease to night’s gentle surrender — We move with the rhythm into something like peace.
Night out. We’re going to glow from within. Funky and soulful, a quiet kind of fire. Sunday afternoon, breathing in the alive feeling. Jazz in our step, hip-hop in our veins.
Saxophone dissolves into silence. Bass still vibrating somewhere deep. Another Sunday held in the afterglow. Keep this feeling close. Until next weekend finds us again.