synthesizer

So I was messing around with my synthesizer the other day and I accidentally turned on my plasma ball which resulted in a cacophony of noise from my synth. For some reason, a current from the plasma ball was interferring with the synth and making it play a bunch of random notes and messed with...

My daughter has her own channel and she wants short intro music like the kind many gamers have. That's what she wants so I'm not going to argue with her. I don't want something generic, I want to make something myself, I'm just not sure what software is used for that kind of music. Are they...