I'm also in the US, but Spanish was my first language. Because my mom was a working single parent, my mom would leave me with my aunt while she was at work, and my aunt at the time barely spoke English having just immigrated to the US from the Dominican Republic. So, I started to speak Spanish, and my mom being fluent in both Spanish and English decided to just speak to me in Spanish. By the time I started attending nursery school at the age of 3, I knew a few English words, but basically expressed myself only in Spanish, which was a problem since I couldn't communicate with either my teachers or my classmates. The teachers had a meeting with my mom, and asked that she start using English at home to bring me up to speed with the other kids. Except I was a stubborn kid, and refused to speak English because I hated it (according to my mom).
Then, in 1991, Michael Jackson premiered his video "Black and White" on television, and I remember watching it with my mom and being blown the frack away. I cried until my mom agreed to buy me the tape of his Dangerous album, and once in my possession, I proceeded to play it non-stop on my little Fischer Price cassette player. It had a microphone attached to the side, and I would carry it around, blasting Michael Jackson, and singing into it like the little spastic fangirl I was becoming. My mom realized a good thing when she saw it, so she went out and bought me every MJ album on tape. And that's how I started to learned English. By listening to Michael Jackson.