That is the version that blew up all over the world. I've told the story enough that people know that David Tickle did not produce that song. It was me." Critical reception AllMusic editor Tom Demalon described the song as a "massive, neo-hippie anthem" in his review of Bigger, Better, Faster, More! Rolf Edmund Lund from Norwegian Altaposten complimented Perry's voice as "incredibly good". Larry Flick from Billboard wrote that "gymnastic vocals, leaping from a breathy, high range, to gravelly, bar-rock blues in a single passage, front this straightforward, heartfelt rocker. Treads the line between album rock and modern rock, with the piano version favoring the former." Tom Sinclair from Entertainment Weekly described it as "funky" and added that it "is only one of the goodies in the Blondes' musical grab bag". James Masterton viewed it as "a wonderful piece of laid back summer rock (well, almost)". Pan-European magazine Music & Media complimented it as a "strong composition", where the lyrics "are done more than justice by Linda Perry's impressive vocal touch." A reviewer commented, "Toni Childs backed by a rock band playing Bobbie McFerrin's "Don't Worry, Be Happy" comes closest as a description." Alan Jones from Music Week felt it is "charming" and "easily the best track" of the album. R.S. Murthi from New Straits Times called it "anthemic" and remarked that it "is probably one of the simplest and catchiest pop songs to be produced in recent times." Carmen von Rohr from Rome News-Tribune noted "the amazingly down-to earth common sense lyrics" of "What's Up?", and added that Linda Perry "sings in her rich, soulful voice about the frustrations she feels as she tries to adjust to her place in the universe." A reviewer from Sunday Life wrote that the song is "naggingly memorable". Ronny Johansen from Troms Folkeblad commented, "What a wonderful use of voice and what an irresistible song!" Chart performance The recording received considerable airplay success. It reached number 14 on the US Billboard Hot 100 and went gold, but peaked higher in many other countries, reaching number one in Austria, Belgium, Denmark, Germany, Iceland, Ireland, the Netherlands, Norway, Sweden, and Switzerland while reaching number two in the United Kingdom and Australia. Impact and legacy "What's Up?" was ranked number 94 on VH1's "100 Greatest One-Hit Wonders" and number 86 on the MuchMore "The Top 100 One Hit Wonders". Some critics disliked "What's Up?" Songwriters