Jars of Clay ?If I Left the Zoo? Notes about song: The second single from ?If I Left the Zoo? is a loaded song musically, with at least two acoustic guitars, at least two electric guitars, along with a prominent organ and various types of percussion. If you listen closely to the acoustic guitar, there are two of them playing at different times; the first is played consistently throughout the song, and is played without a capo. The second, used only for the intro, choruses, and bridge, is capo (azchords.com)