Chris Brown and Tyga

Chris Brown and Tyga photographed in 2015.

Ben Cope

Two new releases see high debuts on Top R&B/Hip-Hop Albums, led by Big Sean, who crowns the ranking with Dark Sky Paradise (139,000 copies sold in the week ending March 1, according to Nielsen Music). The rapper earns his second No. 1 with the entrance, following Hall of Fame, which debuted at the top in 2013. Four tracks from the new set debut on Hot R&B/Hip-Hop Songs, increasing the total number of Sean's concurrently charting tracks to seven -- the most he has placed at one time. The album release also blasts Big Sean 32-2 on the Billboard Artist 100 chart.

Big Sean Scores His First No. 1 Album on Billboard 200

Chris Brown & Tyga Arrive: The second-highest album debut goes to Chris Brown and Tyga with their collaborative set Fan of a Fan: The Album entering at No. 3 with 51,000 copies sold. It enters the Billboard 200 at No. 7. The set contains a mix of R&B and rap tracks, led by first single "Ayo," which steps 7-6 on Hot R&B Songs in its eighth week on the chart. A 24 percent bump in streaming (to 4.1 million domestic weekly sterams), aids in the rise -- also lifting the track 9-6 on R&B Streaming Songs.

On R&B Digital Songs, "Nothing Like Me," featuring Ty Dolla $ign debuts at No. 17 (11,000 downloads). Meanwhile, the rap-dominant "I Bet," featuring 50 Cent, arrives at No. 49 on Rap Digital Songs (6,000). The set as a whole is rap-leaning, qualifying for the Rap Albums chart, where it also debuts at No. 3. A throng of featured acts appear on the album, including T.I., Ty Dolla $ign, 50 Cent and ScHoolboy Q.

Nicki Notches New No. 1: Over on Rap Airplay, Nicki Minaj lifts 2-1 with "Truffle Butter" featuring Drake and Lil Wayne (up 17 percent in audience to 44.7 million impressions), taking Greatest Gainer honors. It's her fifth No. 1­, tying with Rihanna (all in featured roles) for the most chart-toppers by a woman on the chart.

Silento Whips Onto Hot R&B/Hip-Hop Songs: A viral dance trend boosts Silento's "Watch Me" to a No. 33 debut on Hot R&B/Hip-Hop Songs, spurred by 2.6 million domestic weekly streams (up 85 percent). The song's chorus "watch me whip, watch me nae nae" has incited fans to upload dance videos on platforms like Vine (which are then transferred to YouTube), accelerating its popularity.

Usher Logs 15th Airplay No. 1: Usher earns a new airplay No. 1 as "I Don't Mind" featuring Juicy J steps 2-1 on the Mainstream R&B/Hip-Hop airplay chart (up four percent in plays), in its 17th week. It's the singer's 15th song to top the list, which maintains his standing as the act with the third-most No. 1s -- inching closer to rank leaders Lil Wayne (17) and Drake (20). The climb gives Juicy J his first No. 1 on the chart, he previously peaked highest with "Bands A Make Her Dance" featuring Lil Wayne & 2 Chainz, which reached No. 2 in 2012.