I like to think of myself as a fairly accomplished shouter of songs. The other week, for example, I accurately sang probably 75% of the notes to Celine Dion’s The Power of Love while in the shower, and the other day I sang the part of Cabaret about goin’ like Elsie without my voice cracking/glass shattering. Glee star Amber Riley is a human reality check to the notion that I am capable of singing any songs with any degree of skill. Case in point: her DNC-opening rendition of The Star Spangled Banner.