bass reference music

I have my Studio Monitors with a Subwoofer calibrated for the flat frequency response + a little bit of personal taste. I have been listening to different genres of music and I have been jumping between Electronic and Rock/Metal music. While I have been listening Electronic Music I haven't seen...

Post some nice examples of tracks that can challenge your system/headphones with lower spectrum notes. Try to include not only tracks from a "reference test suite" category but also those that are fun to listen (or you like personally). Although it's natural to expect some electronic music...