To "live DJ" there's the extremely famous https://virtualdj.com/ To create prerecorded DJ sets https://www.mixmeister.com/ Been using both for at least 10 years, love them both. - Source: Hacker News / 6 months ago

Not open source, but free for "home use" https://virtualdj.com/. - Source: Hacker News / 6 months ago

I started with Virtual DJ to get used to the software latency (I came from turntables) and get my muscle memory on button locations (which is why I stayed with the same brand). VDJ has every feature you need. The software is free to use without a controller from virtualdj.com. Source: almost 2 years ago

A lot of the places that do it from scratch I notice use https://virtualdj.com/. Source: almost 2 years ago

DJ software, like VirtualDJ will have features that are more conducive to what you're trying to do, like live looping functions that help you lock the loop to the beat. It's also cheaper (free for non-commercial use without a hardware controller) than QLab, and it's cross-platform (QLab is Mac-only, if that matters). Source: about 2 years ago

Https://guitardashboard.com/ really good way to visualize notes on the fretboard. Source: 7 months ago

Use the circle of fifths and pick a key (doesn't really matter which) + natural minor which will give you a vocabulary of "allowed notes". Later you can venture outside the "allowed notes" but that's too much for now. Source: about 1 year ago

If I wanted to boil this kind of thing down to the simplest 1, 2, 3 step procedure possible, in order to get straight to experimenting with sounds, what would I do? I'm finding Fretflip, Guitar Dashboard, and this Chord Identifier very useful resources to work with as cheat sheets while I take on internalizing the actual theory knowledge I'm building a little more slowly. Source: almost 3 years ago

And also there is my own website Guitar Dashboard, a music theory explorer for guitarists. I created while working through the Pedler book above, so they complement each other quite well. Source: about 3 years ago

I've created an interactive website called Guitar Dashboard that's designed to map scales, modes, chords, etc to the guitar fretboard. It's free and open-source. You might find it useful? (also does violin) :). Source: about 3 years ago