Piggy Guys is a battle theme in Mother 3. It's a marching tune that plays when battling a Pigmask. Part of this song, from 0:16 to 0:30 is consisted of part of His Highness' Theme.

Piggy Something

Piggy Something is the harder version. It is almost the same, except that it topples at 0:08 and 0:17, making the rhythm play slower. Also, at 0:26, 3 extra notes play that must be hit accordingly. Other than that, there's an extra drum beat at the end of the theme, but it doesn't affect the rhythm.