From a performance standpoint, no.
From a production standpoint, yes.
I've been DJ'ing for over 10 years
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Electronic music is, at it's core, a technical skill, more than a performance skill. It's the kind of music you're more likely to find computer programmers, gamers, rpg nerds, people with a focus in math or art, listening to and involved in than others.
It's also the core of Hip Hop instrumentals. You take out the vocals, you're left with basslines, beats, synths, and safe to say a majority of that is sampled, cut together, looped, and sequenced on a computer program somewhere before they even drop a lyric on it.
Same with most modern pop music. Live instrumentation and pure vocal talents are a fading art and it's dying in a sea of autotune and DIY Studio software.
Granted, a musician MAKES MUSIC, a DJ makes music HAPPEN.
The technical distinction is not one that can usually be made visually from the crowd. Unless you're intimate with the material you're hearing BEFORE you hear it come from the DJ, you're not likely to know just by listening or watching, how much of it is them, or the material they're using.
That said.
If you see something like
"DJ Shauk - Summer sessions vol 1." It's probably a handful of songs arranged and mixed with each other in a way as to feel seamless, more like a casual hour long audio journey through my musical mindset when I hit record. It's not meant to be a showcase of skill, but of taste, of energy, of the big picture.
"DJ Shauk - Track 2" is likely to be an actual production, at that point, the "DJ" is a misnomer, honestly most DJ's that label their productions with their DJ names are amateurs.
The exact opposite is irony. Deadmau5 produces a ton of music, but he also DJ's, while using Deadmau5 as his stage name.
The title "DJ" is open to much interpretation and honestly I've given up on using it as it's just going to group me with the wedding dj's and the kids who bought turntables and don't know how to mix, or the radio jockeys, to the uninformed. So I usually book myself as just "Shauk" instead of "DJ Shauk" to avoid that label. That way what I do up there isn't going to be subject to the average public reaction to the title. (you know, HEY CAN YOU PLAY EMINEM OK?)