One thing to note is that a DAW will provide midi capability as well as audio parts. btw audio parts don't need to be loops.
As a midi musician I would recommend exploring the use of a DAW, or at least the combination of musescore with fruityloops or similar. Certainly loops will introduce you to new genres, from moby onwards. You can achieve a hell of a lot mixing midi with loops. To do so you need to break out of standard midi instruments and start using synth and sampler vsti instrument plug ins. Adding in a DAW you can include recorded audio, such as an original vocal line, or a single guitar part.
I will dig out some chillout electronica I recorded a few years ago that is all midi instruments, samples, loops etc with the exception of an occasional guitar part and the very obvious real vocals. that will give you an idea of what you can do. If you do not have either the voice or the recording gear, or the guitar abilities you can of course collaborate with other musicians, ask them to record the vocals or guitar and get them to send you the files which you can then include in your mix.