The Def Jam staff has the #1 Most Added track at T40 today by a landslide, as David Guetta's "2U" f/Justin Bieber (Atlantic-DefJam) scores 147 adds. Bruno Mars' "Versace On The Floor" (Atlantic) pulls in 47 more stations. Epic puts another 33 adds on Fifth Harmony's "Down" f/Gucci Mane (Syco). Republic builds 20 more adds onto Liam Payne's "Strip That Down" f/Quavo. Glassnote is back in the Top 10 for a fifth week in a row with Childish Gambino's "Redbone," pulling in 18 more stations. Warner Bros. lands 15 adds for Bebe Rexha's "The Way I Are" f/Lil Wayne. Epic secures 14 more adds on French Montana's "Unforgettable" f/Swae Lee (Earrdrm/BB/Interscope-Epic) and Def Jam puts 10 on Logic's "1-800-273-8255" f/Alessia Cara and Khalid.