Robby Klein Gabby Barrett is on a hot streak with "I Hope.". Gabby Barrett - I Hope (ft. Charlie Puth) (Audio) - YouTube The crossover star and her duet partner, Charlie Puth, have locked in the number-one spot on the Billboard Adult Pop Songs chart this week, which measures radio airplay on select pop music stations, with the remix of "I Hope. "It also currently sits at number eight on the Hot 100.