The song marks the first leader for writing & production team StarGate since Rihanna's "Diamonds" in 2012.
Sam Smith and Normani's "Dancing With a Stranger" is the newly-minted most heard song on U.S. radio, as it crowns Billboard's all-genre Radio Songs airplay chart (dated May 18).
The duet rises 2-1 on the ranking with a 9% gain to 102.9 audience impressions in the week ending May 12, according to Nielsen Music.
Smith scores his second Radio Songs No. 1, after "Stay With Me" topped the tally for six weeks in 2014. Normani leads the list for the first time, after her first solo entry, "Love Lies," with Khalid, reached No. 3 last September. (As a member of Fifth Harmony, she hit a No. 4 Radio Songs best with "Work From Home," featuring Ty Dolla $ign, in 2016.)
"Dancing" is just the fifth co-billed No. 1 between a male and female soloist since Radio Songs began in December 1990. It follows Bruno Mars and Cardi B's "Finesse" (four weeks, 2018); JAY-Z and Alicia Keys' "Empire State of Mind" (nine, 2009-10); Usher and Keys' "My Boo" (six, 2004); and Peabo Bryson and Regina Belle's "A Whole New World (Aladdin's Theme)" (four, 1993).
Additionally, Smith and Normani wrote "Dancing" with StarGate, the duo of Tor Erik Hermansen and Mikkel Storleer Eriksen, and James "Jimmy Napes" Napier, with StarGate and Napier producing the song. StarGate earns its 11th Radio Songs No. 1 (having written and produced each leader) and first since Rihanna's "Diamonds" in December 2012. The pair first reigned Beyoncé's "Irreplaceable" in 2006-07.
Napier notches his second Radio Songs No. 1 as both a writer and producer, after Smith's "Stay."
"Dancing" also darts 4-1 on the Adult Pop Songs genre airplay chart, likewise becoming Smith's second leader (after "Stay" ruled for two weeks in 2014) and Normani's first.
On the all-genre, airplay-, streaming- and sales-based Billboard Hot 100, "Dancing" has reached a No. 7 high and places at No. 11 on the May 18-dated chart.
All charts will update tomorrow (May 14) on Billboard.com.