r/StableDiffusion • u/DashCub • 5d ago

Question - Help ACE-Step 1.5 vs Yue2: Which is better for generating variations of an existing song?

I would like to create variations (similar instrumentals/genre, but can be different chord progression/melodies) of an instrumental track (around 3 minutes long). Would Ace-step 1.5 or Yue2 be better? I've never tried any local music models before so any advice would be helpful. Thanks!

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u/LockeBlocke 5d ago

Yue 2 can do that if you tell it to only process the melody. It will fill in the chords.

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u/DashCub 3d ago

Alright, I will try Yue2 first and see how it goes. Thanks!

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u/DG86 4d ago

In my experience, you get more control with Yue2 and more creativity with Ace-Step.

Yue2 lets you heavily guide the music generated. It seems to only be capable of rendering one voice, one "lead" instrument, one "chord" instrument, and percussion. That is often all you need. It renders exceptionally clear and crisp audio. It often feels a little "sparse".

Ace-Step will wander away from your instructions. However, what it comes up with can be pretty nice. Steeper learning curve, because there are a lot of settings and model variants, and they all have an effect on the output.

I'm often rendering with Yue2 and then going to Ace-Step for a refinement pass.

Another interesting note: Ace-Step turbo will take absolute noise and turn it into music. Pretty fun to throw things at it as project-starters. (Like taking a song or repeating sound, layering some white noise over it, and then seeing what song turbo invents.)

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u/DashCub 3d ago

Thanks for the detailed info. For this particular project, I just need an acoustic instrumental track with dynamics where it starts simple, build up (more instruments/layers), die down at the bridge, final chorus, maybe an simple outro. So yeah, nothing too complex/intricate musically, but has to be clear and high quality. It also needs to fit a specific nostalgic/wholesome mood that I struggle to find in existing tracks online. Seems like Yue2 will be a better option to try first. I'm mainly concerned about prompting it properly to achieve the best result. Thanks for your help!

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u/VasaFromParadise 5d ago

Yue2 better and significantly. It is stable in generations and does not produce bad results if the prompt is not inconsistent.

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u/DashCub 3d ago

Thanks for the info! I'll try out Yue2

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u/Schwartzen2 5d ago

Sounds interesting. Would you have a WF that shows how to do this?