First off, that's totally awesome you play guitar. How long have you been playing for & what type of guitar do you own? I have someone who plays in the house so I know quite a bit about pedals, looping, & ways to achieve certain guitar effects. However it must be hard to improvise, you know I see people like slash or steve vai improvise and it blows my mind! Also music does have certain frequencies that do in fact have a way to cure our souls. Through the way a persons voice reaches certain pitches to things like binaural waves added to instrumental music. Thats actually what I use to sleep, any type of music that has binaural waves in it.
In regards to other types of music such as techno and people like DJ's, I just think it all about how you look at the way they're actually putting things together. A great DJ will have a good ear to produce the music he does & vice versa with anyone who produces techno. Although I will admit these genres are usually my least favorite too.