There's definitely something to the math-music correlation that goes beyond just practicing a lot. My son has a love of math and a love of music too, but love isn't even quite the right word. It's almost like his brain is obsessed with notes. He will hear classical music and then hum the notes repeatedly afterwards that almost seems like OCD. He tells me that when he can't sing notes, he 'sings them in his mind'. I haven't put him in music classes yet, just bought a radio/CD player and when he's had a hard day I tell him to chill out with some music.