Second Toughest in the Infants is a 1996 album by Underworld.

This 1996 album was Underworld's first album that could be classified as Progressive House, being a mixture of techno, progressive rock, and having some other influences as well. The first track is the best example of this. A track in three movements, "Juanita : Kiteless : To Dream Of Love" resembles some of the longer progressive rock songs in the mid seventies such as Joe's Garage, "Supper's Ready" and "Close to the Edge", while retaining elements most common to trance music. The second track, "Banstyle / Sappy's Curry", is also a journey, though not as enthralling as the first track; the song features acoustic guitar throughout the second half. The third track, "Confusion the Waitress" is a dark track, which leads up to the lighter yet driving "Rowla". "Pearl's Girl" is the most straightforward song, featuring fast breakbeats leading to a sound closer to drum and bass. Clocking in at over nine minutes, this was their dancefloor hit. "Air Towel" is an interesting track, with many unintelligible lyrics and some odd instrumentation. "Blueski" is a two minute guitar section, similar to "Horizons" by Genesis, in its function and placement on the album. The final track, "Stagger", is a slow, quiet ending to the album.