How do I tell my mom I listen to BOTDF?

My iPod library is backed up on my family den's computer. And my mom sometimes goes through my music and listens to it. My friend told me about BOTDF and now I'm a huge fan! I have 3 songs from them and if you know BOTDF, you know how their music is... I have innocent high,fallen star, and ting. I'm afraid my mom will listen to the songs and freak out! I'm a 13 years and a girl. I usually do NOT listen to this type of music! I listen to popular music teen girls would (Bruno mars, train, ke$ha, black eyed peas, paramore, popular artists) :P anyway, what do I do?