The album employs a storybook structure, with many of the songs involving narratives that relate to one another.

The album features main vocals from all three of the brothers, and employs a variety of musical styles.

The album employs the recording of duel acoustic and electric guitar tracks, and a more song-based approach.

The album employs images of fallen soldiers in civil war battles to invoke subtle political messages relevant to current events.

As stated on the official Subconscious Communications website, the album employs some of the oldest synthesizers the studio has in its sprawling collection.

The album employs a variety of production techniques relatively new to U2, including sampling, loops, programmed drum machines, and sequencing.

Significantly, all three albums employ music's "twelve-tone system"--in other words, the actual chromatic scale!

The album employed a much heavier and harder rock sound.

Although the album employed a more "American" sound, it did little business in the US or the UK.