Ive been listening to a lot of rock recently with ACDC by far being my favorite. They really have some amazing rythm and an awesome lead singer. They are great for doing things that require you to be pumped up and are by far my favourite band for workout music.
However there are many other great bands out there as well such as Black Sabbath and I just love to sit down and take in some of their amazing songs such as N.I.B. and War Pigs.
I also do listen to soundtracks sometimes. I love the Dark Knight soundtrack with its amaizng orchestral pieces by Hans Zimmer. Its really nice to listen to when focusing on other important things. The soundtracks to Inception and Interstellar are also absolutely amazing and worth a listen to.