Holst's Mars. If that piece doesn't get your testosterone going I don't know what will
I'm a Mahler groupie first and foremost. I know all of his pieces by heart and I love all of his works- he's the only composer I can say that about (besides maybe Tchaikovsky). I also enjoy many Wagner and Richard Strauss works. Recently I've been listening to Berlioz's Symphonie Fantastique a lot. I regularly listen to Beethoven and Chopin as well. Horowitz is my favorite pianist
I don't listen to a lot of Mozart, but there's a time in everyone's life when you just need some. There's never, ever a time in your life when you just need some expressionist shite.
I think Herbert von Karajan was, and remains, the greatest conductor of the recording era (other than his Mahler recordings which I find a little weak). I think it's amazing that 40 years later, his records are STILL the greatest ever produced.
That's sort of my musical opinions in a nutshell