I'm glad if folks can find some interest or fun in this stuff.  I think it makes scale practice more fun to do, because it makes it sound and feel more like doing "real music".

To make sure it was beginner-friendly, I made it a point to stick to easy keys that most beginners learn early on.  Even that F# minor only looks scary as a name.. it's actually the same notes as the familiar A Major scale.  The E minor is the same notes as you know from G major and the A minor is the same notes that you know from C major..

And really, for most genres, being able to play the scale along with a backing track in the same key is right on the doorstep of beginning to be able to improvise.

I do use tracks like these myself to practice scales.  But often after I've practices a scale all the way through a backing track video, then I'll play the video again to improvise and jam through it.. Just making up music as I go along.  I like doing that, one of my favorite musical activities. 

And just when you thought you were safe, here's a couple backing tracks in yet another genre you can try.  I'm just going to very generally call it "Latin", but hopefully it is understood that like any of the genres already listed, there are many different sub-genres and flavours that can be thought of as being part of the very broad general term.

Flamenco rumba A minor

Ok, well not strictly in A minor, since the E chord being major opens up some other scale possibilities, but you *can* jam to this with a simple A minor scale as well.

And here's one in B minor

@Uzi: I definitely agree with it helping intonation.  But a thing I have noticed is that how far one can be "off" seems to depend on the genre/style and what instruments are in the accompaniment and how they are mixed. 

To a certain degree, "off" can be intentional and that is not an error.  The violin not having frets allows for expressive possibilities in how we choose to intone.   Push that envelope too far, though, and a listener may wonder if you tuned up before playing or if perhaps you might be trying to play in a different key than the backing. LOL

Vibrato can be a simple example of intentionally going "off" pitch.  It can be a nice embellishment, give particular notes some feel.  But make it too wide and it starts sounding less musical and more like a sound effect from a sci-fi or horror movie.

Backing tracks are a safe way of experimenting with that sort of thing, though.  They don't wince if you try something that really doesn't turn out like you hoped, and they don't go telling all their friends about what a bad session it was.  LOL