A second opinion
I recently came across the following comments about my favorite song of 2006, "a little pain" by OLIVIA inspi'REIRA. This comes from AnimeNation's "Ask John" column, and provides a more eloquent analysis of what makes the song so great than I could ever articulate:
"The first ending theme for the Nana anime television series, "a little pain," performed by OLIVIA inspi' REIRA (TRAPNEST), is the aural embodiment of the "Gothic Lolita" fashion style. It's contemporary but also has a sort of timeless folk rock undercurrent. Its lyrics and performance both express the longing of a tender heart, which is always moving. The intermingling of acoustic and electric guitars, along with the power ballad style create a sound that's powerful and instantly memorable."
Word.