Gaga began her musical career performing songs at open mic nights and school plays.
She studied at CAP21 through New York University's Tisch School of the Arts before dropping out to become a professional musician.
As a result, she was hired to write songs for Britney Spears, New Kids on the Block, Fergie, and The Pussycat Dolls.
She collaborated with him in the recording studio for a week on her debut album, signing with Cherrytree Records, an Interscope imprint established by producer and songwriter Martin Kierszenbaum; she also wrote four songs with Kierszenbaum.
It topped the charts in more than 20 countries, including the US, where it sold more than one million copies in its first week.
The singer responded: "My name is Lady Gaga, I've been on the music scene for years, and I'm telling you, this is what's next." By 2008, Gaga had relocated to Los Angeles to work extensively with her record label to complete her debut album, The Fame, and to set up her own creative team called the Haus of Gaga, modeled on Andy Warhol's Factory.
Gaga ventured into R&B and disco with her third album Artpop (2013), which topped the US charts and included the single "Applause".
In 2014, Gaga released a jazz album with Tony Bennett titled Cheek to Cheek, her third consecutive number one album in the US.
While Gaga and Starlight were performing, Fusari continued to develop the songs he had created with her, sending them to the producer and record executive Vincent Herbert.
Having served as an apprentice songwriter during an internship at Famous Music Publishing, Gaga struck a music publishing deal with Sony/ATV.