There is no station at Armitage on the Blue Line. I would take the Blue Line from LaSalle to Western. It is just a few blocks from there. CTA train fare will be $2.25 each way. Just load up a transit card with $4.50 before you go so you don t have to wait in line when you return. Another thing to be aware of is that there is construction on the weekends on the Blue Line that has it closed between Halsted and Clark/Lake. If that is going on, just walk north to Van Buren and take a Brown Line train around to Clark/Lake and transfer to the Blue Line there. The transfer at Clark/Lake is free. On the return trip, transfer to a Pink Line train at Clark/Lake and get off at LaSalle.
Take the blue line to Armitage station, then walk two blocks on Milwauke Ave.
you rolllln for deadmau5:)?