Certain songs are recognizable by their opening percussion. They begin with just drums--no other instruments and no melody. I heard one such song, "Closer" by Nine Inch Nails, yesterday. After just two drum beats, from the timing and timbre of the percussion, you know it's that song if you've heard it enough.

There aren't a lot of songs in this category, but some others include:

• "Uptown Girl" by Billy Joel
• "All This Time" by Sting
• "Ants Marching" by the Dave Matthews Band
• "Burnout" by Green Day
• "Low" by Cracker