Two Quick Questions

[JSumter]

Here is the deal I am having at the moment. I am a freshman starting my second semester here, and I was wondering if it is possible to join two fraternities. (They aren't both social) I play a few different instruments and play in ensembles, so I was planning on being in Phi Mu Aplha, however I was considering pledging one of the social fraternities next year. From my understanding PMA is an academic fraternity mainly. They don't have a house, and mainly just do some service projects and such. So my question is, is it possible for me to join PMA and a social fraternity at the beginning of my sophomore year?

Also, is it looked on negatively when you try to join a fraternity as a sophomore?