Blake Shelton keeps piling up the Billboard bragging rights. The Voice coach hasn’t released a song in more than five years that has not topped the magazine’s Country Airplay chart . As of this week, his Number One streak is at 14 songs in a row, as his “Lonely Tonight’ duet with Ashley Monroe hits the top — breaking his own record for consecutive trips to the radio-based chart’s pinnacle. Blake Shelton keeps piling up the Billboard bragging rights.