Research and details can take time; several pieces required a full year to complete.

A piece requires more time to paint than a throw-up.

The piece should require pressing into place between the ends.

The piece is open to the public during museum hours and does not require museum admission.

"Each piece of law," he said, required the "need to twist some different arms."

Such pieces can require two people to set them up.

These pieces are all short but require a strong understanding of technique.

"At 33 minutes, the piece requires a lot of stamina," he said.

Their pieces required a high degree of skill to play.

Large pieces of garbage require the player to reach higher level before they can be cleared.