 Complete the following phrase:  In 2013, he participated as a writer on a number of collaborations, for example co-writing the Justin Bieber song Confident, which featured Chance the Rapper and had hip hop and reggae elements. In 2013 and 2014, he co-wrote six songs on the Chris Brown album X, after taking part in a writing camp put on by RCA Records. One of the tracks, a promo single titled Dont Think They Know, came out in late 2013 and peaked at No. 81 on the Billboard Hot 100. Other tracks he co-wrote on the album featured artists such as Jhené Aiko and Trey Songz, while Love More featured Nicki Minaj and reached No. 23 on the Hot 100 chart. The albums track New Flame, which featured Usher and Rick Ross, went on to be nominated for Best RB Song at the 