Tomorrow is "fiesta nacional" and as (almost) everyone is free on wednesday, Madrid has some good electronic parties going on tonight for the ones that loves to go out.
At Fabrik tonight you can see 2 Many Dj´s, Dj Hell and Anthony Rother. If you arrive before 00:30 the price is 20 euros and you get 2 drinks. Very good price! The nearest Metro is MetroSur, Fuenlabrada Central.
Armin van Buuren, Markus Schulz and Jochen Miller is also playing in Madrid, at Madrid Arena, Casa de Campo. You can go and enjoy their music for 25 euros.