• ‘The Voice’ Season 9 (2015) Live Playoffs Week 2 Performances Recap, Spoilers: Top 12 Perform

‘The Voice’ Season 9 (2015) Live Playoffs Week 2 Performances Recap, Spoilers: Top 12 Perform (Photo : The Voice/Facebook/ NBC)

"The Voice" Season 9 (2015) premieres Sept. 21, 2015 on NBC. The highly anticipated fall instalment of NBC's reality singing competition is set to introduce new talent and see the return of the fan-favourite judges. Here are few things fans must watch out for in "The Voice" Season 9 (2015). Also, find out where to watch the premiere online through live streaming.

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1. Return of the Coaches: "The Voice" Season 9 (2015) will see the return of veteran coaches Adam Levine and Blake Shelton for the ninth time. The intense competition between these two judges and their bromance are reasons why fans like to return to the show season after season. Fans must watch out for their entertaining interaction. Season 8 winning coach Pharrell Williams will return to the judges' panel for the third time. Will he again help a contestant rise to the top? Meanwhile, music sensation and style icon Gwen Stefani will make a return for her second instalment after a season hiatus.

2. Star Power and Mentors: "The Voice" Season 9 (2015) is going to bring together number of fan-favourite celebrities. Joining the show as a mentor to Pharrell Williams' team is Missy Elliot. Country crooner Brad Paisley will mentor Blake Shelton's team. John Fogerty will coach Adam Levine's team and if that's not enough Selena Gomez will assist Gwen Stefani's team.

3. Rihanna: Adding more glamour to "The Voice" Season 9 (2015) is Rihanna as the key advisor to all the contestants. However, fans will have to wait until The Knockouts to see Rihanna mentor the participants.

4. Incredible Talent and Intense Competition: Season after season, "The Voice" introduces the world to some amazing singers. Season 9 (2015) will also see some incredible talent singing some terrific covers, delivering some mind blowing performances and battling against each other for the top spot and the most coveted prize of the title of "The Voice." These contestants also have some inspiring stories from their lives to tell. The network released a sneak-peek giving a glimpse of how intense the competition is going to get when the likes of Barrett Baber join the show. All four judges turn around during his Blind Audition wherein he sings the cover of "Angel Eyes" and each coach tries to convince him why he should choose them. According to Examiner, Barrett Baber recently released his EP titled "Falling Again" and he will be touring with Season 7 contestant Luke Wade. Scroll down to watch the sneak peek.

5. Special Performances by Celebrities and the Judges: "The Voice" is not only about competition and battles. Fans must watch out for some special performances by A-List artists from the industry on various occasions. Besides the celebrities, the coaches are also expected to take the stage on various occasions. For starters, Blake Shelton, Gwen Stefani, Adam Levine and Pharrell Williams will together get on the stage to perform a medley. The judges sing a cover of each other's popular singles. Gwen Stefani sings Blake Shelton's "Neon Light" and Blake Shelton performs Gwen Stefani's "Don't Speak." Meanwhile, Pharrell Williams sings Maroon 5's "Sugar" and Adam Levine sings "Get Lucky."

Furthermore, fans can also watch out for some really good renditions by the contestants. These covers are made available to the audience through iTunes Music.

"The Voice" Season 9 (2015) kicks off with blind auditions on Sept. 21, 2015 at 8:00 pm on NBC. Fans can also watch the premiere online through live streaming on nbc.com.

The Voice 2015 - The Voice Coaches Perform Each Other's Hits (Sneak Peek)

Credit: YouTube.com/The Voice

The Voice 2015 - Barrett Baber's "Angel Eyes" (Preview)

Credit: YouTube.com/ The Voice