Brandon Diaz Biography
Brandon Diaz is an American singer and musician competing on The Voice Season 30. The 29-year-old previously appeared on American Idol and first auditioned for The Voice as a teenager during Season 4.
His return to the competition came more than a decade later. Brandon performed Justin Timberlake’s “Drink You Away” during his Season 30 Blind Audition, earning chair turns from Kelly Clarkson and Queen Latifah before choosing Team Queen.
Brandon is also married to singer Jackie Foster, a former Voice semifinalist. Together they perform professionally as The Diaz Duo.
Who Is Brandon Diaz?
Brandon Diaz is a singer-songwriter originally from Ashburn, Virginia.
Music has been a major part of his life since childhood. He began singing publicly when he was young and later studied at Berklee College of Music in Boston.
Brandon’s television experience is unusually extensive for a Season 30 contestant. Before his latest Voice appearance, he had pursued opportunities on The Voice, The X Factor and American Idol.
Brandon Diaz Age
Brandon is 29 years old during The Voice Season 30. He was 21 when he appeared on American Idol in 2018.
Parents and Cuban Family Background
Brandon comes from a musical family with Cuban roots. His father was born in Cuba and later came to the United States. Brandon has spoken about his father’s influence on his life and music, describing him as a singer who helped teach him much of what he knows.
During Brandon’s 2018 American Idol journey, his family story formed an important part of his introduction.
His mother, father and sister accompanied him during part of the audition process, according to contemporary reporting from his hometown.
Briar Woods High School
Brandon attended Briar Woods High School in Ashburn, Virginia. After graduating, he moved on to Berklee College of Music in Boston.
Brandon had already accumulated significant performance experience by then. He began singing the national anthem at sporting events at a young age and has said that performing in front of a large Washington Capitals crowd as a teenager helped convince him to pursue music seriously.
Berklee College of Music
Brandon studied at Berklee College of Music. His time at Berklee became important both professionally and personally. He continued developing his singing and songwriting skills there and performed with other musicians, including through the group Brandon Diaz ‘N Soul.
Berklee is also where his path crossed with his future wife, Jackie Foster.
Brandon’s college years eventually led him back into television competitions through American Idol.
Brandon Diaz on American Idol
Brandon competed on American Idol Season 16 in 2018. For his televised audition, he performed Allen Stone’s “Unaware.” His vocal range and falsetto impressed judges Katy Perry, Lionel Richie and Luke Bryan, and he received three yes votes.
Brandon eventually advanced to the Top 24.
His American Idol appearance is an important part of his biography because it shows that his Season 30 run on The Voice was not his first experience performing in a national singing competition.
His First The Voice Audition
Brandon’s relationship with The Voice began much earlier. He first auditioned for the program when he was 14 years old, during Season 4.
Brandon performed Andy Grammer’s “Fine by Me,” but none of the coaches turned their chairs.
Rather than ending his pursuit of music, the unsuccessful audition became part of a much longer career. Brandon later said he was nervous at the time and was still figuring out who he was as an artist.
His Season 30 return therefore came roughly 15 years after his first attempt.
Other Television Competition Experience
Brandon also auditioned for The X Factor as a teenager.
Contemporary profiles from his American Idol period reported that he received approval from Simon Cowell during that experience.
Jackie Foster
Brandon is married to Jackie Foster, an American singer who has her own history with The Voice.
Jackie competed on The Voice Season 14 and reached the semifinals. During her season, she worked with both Kelly Clarkson and Adam Levine.
That created an unusual situation when Brandon returned for Season 30: two coaches were familiar with his wife’s history on the competition.
Jackie’s career extends beyond reality television. Her professional work includes performing as a background vocalist and appearing at major live events.
How Did Brandon Diaz and Jackie Foster Meet?
Brandon and Jackie met through their music careers and were both associated with Berklee College of Music.
The couple’s professional biography says they fell in love in 2016 and have been singing together since then.
They later married and built a professional performance business together.
The Diaz Duo
Brandon and Jackie perform together as The Diaz Duo. The act provides live music for weddings, private events and corporate events, particularly in Southern California.
Their official biography says they have performed at more than 600 events together.
Brandon plays instruments including guitar, while the couple’s arrangements make use of their ability to sing harmonies and perform as a self-contained musical act.
This work has allowed Brandon to earn a living through music outside television competitions.
Professional Music Career
Brandon’s professional credits extend beyond American Idol and The Voice.
The Diaz Duo’s official biography says he has performed with artists including Luis Fonsi, A.R. Rahman, Meghan Trainor, Olivia Rodrigo and Jacob Collier.
It also credits him with performing at the 2023 Emmy Awards.
Those professional experiences help explain the difference between the teenage singer who failed to turn a chair during Season 4 and the more experienced performer who returned for Season 30.
The Voice Season 30
Brandon returned to The Voice at age 29. He performed “Drink You Away” by Justin Timberlake during his Blind Audition.
Queen Latifah turned first, followed by Kelly Clarkson. Adam Levine later acknowledged that not turning had been a mistake.
Brandon ultimately chose Queen Latifah. His decision places him on Team Queen alongside Kayleigh Mathews, another four-chair contestant, as well as Lillie Kolich, Mia Knight and BigCountry.
Brandon Diaz and Jackie Foster on The Voice
Brandon’s Season 30 appearance creates one of the more unusual husband-and-wife connections in the show’s history.
Jackie reached the semifinals years before Brandon returned to the competition. She joined him during his Season 30 Blind Audition segment, allowing viewers to see the connection between his current journey and her earlier experience.
Brandon now has an opportunity to advance in the same competition where his wife previously reached the semifinal stage.
Brandon Diaz is active on Instagram. His Instagram handle is @brandondiazofficial.
Brandon Diaz Quick Facts
Full name: Brandon Diaz
Age: 29 during The Voice Season 30
From: Ashburn, Virginia
High school: Briar Woods High School
College: Berklee College of Music
Profession: Singer and musician
Wife: Jackie Foster
Music act: The Diaz Duo
Previous shows: The Voice, The X Factor, American Idol
American Idol result: Top 24
Season 30 audition song: “Drink You Away”
Team: Team Queen
Brandon Diaz Beyond The Voice
Brandon’s Season 30 appearance represents a return rather than the beginning of his career.
Between his unsuccessful teenage audition and his 2026 return, he attended Berklee, competed on American Idol, developed a professional singing career and built The Diaz Duo with Jackie Foster.
