i miss the days of downloading leaked songs from music blogs. do leaks even happen anymore? it’s hard to explain just how magical it felt to be a music lover during those first 15 years of the century. back then, it was common for demos or unfinished versions of songs to pop up online. i know this because i had a blog. some of my favorite songs from that era were demo versions that sounded noticeably different from the official releases. one of those songs is keri hilson’s “return the favor.” pr