Pop quiz: what was the biggest single of 2001? Here’s a hint: it’s one of only three that never actually topped the Billboard Hot 100 for a single week. That answer would be “Hanging by a Moment,” the breakthrough single by Los Angeles pop-rockers Lifehouse. Now, 17 years and four Top 10 albums later, the group is slated to release a greatest-hits compilation through UMe. Led by smoky-voiced, spiritual-not-religious songwriter Jason Wade, Lifehouse first began its run as Blyss, an alternative quintet produced by Ron Aniello (who’d later produce records for Barenaked…