Larry Flick from
Billboard magazine wrote, "Does pop radio need yet another clique of young, videogenic harmonizers? The answer was a resounding no ... until the onset of
Five, a UK quintet of cuties who swagger with undeniably sharp vocal precision and an appealing degree of soul. "When the Lights Go Out" chugs with faux-
funk authority and a crackling pop
chorus. You will be irreversibly hooked on this tasty guilty pleasure long before the track reaches its conclusion. Voted best new act of 1997 by the teenybopper readers of
Smash Hits in the UK, Five are the first real reason the
Backstreet Boys have had to look over their shoulders in a serious sweat." In a 2021 retrospective review, ''Can't Stop the Pop'' said that with the song, "Five demonstrated a sense of personality, identity and charisma far beyond that of just good marketing." A reviewer from
Music Week gave the song three out of five, noting that the follow-up to "
Slam Dunk (Da Funk)" "is a slower blend of
hip-hop, soul and rap and should be destined for the Top 10." The magazine's Alan Jones felt that "its
jack swing-ish backing track probably doesn't bring out the best from a fair tune, and their rapping seems little more than perfunctory. They're probably hot enough to get away with it, but more inspiration will be needed next time." In 2020,
Rolling Stone ranked "When the Lights Go Out" number 67 in their list of "75 Greatest Boy Band Songs of All Time". ==Music videos==