In 2004, Silveira was invited to join the band Fadomorse, participating in the album Gritar o Fado – Revisitado, where she recorded tracks like "Cinzeiro de Prata" and "Deicídio" with Adolfo Luxúria Canibal.
After a national tour and a live DVD recording at ESMAE(College of Music and Performing Arts in Oporto), she decides to leave the band.
That same year, she became part of the cast in the musical play Cabeças no Ar, written by Carlos Tê and scored by Rui Veloso, Jorge Palma, Tim, and João Gil.
Additionally, following her performance of Led Zeppelin's "Whole Lotta Love," Diana was also featured on led-zeppelin.org, the largest fan site dedicated to the band, which highlighted her rendition.
Diana’s versatility was further demonstrated when comedian Rui Unas invited her to participate in the musical parody "Margem Sul State of Mind," inspired by the Alicia Keys and Jay-Z song.
In January 2011, she chose to delete her social media page and adopt the name Diana Silveira in a bid to relaunch her career and distance herself from the pop image associated with Ídolos.
Kween, a blues/rock tribute band, with Ivo Perpétuo on guitar, Nuno Encarnação on bass, Marcos Vita on keyboard, and Cecílio Lucas on drums.
Over the years, Diana has collaborated with various Portuguese musicians, including Duarte Papel, Wax Flamingos, SOUQ, Aires Pereira (Moonspell), and Sam Alone, among others.
Her performance in a jam session at the prestigious Great British Rhythm & Blues Festival in Colne drew the attention of musicians and agencies, opening up significant opportunities.
This experience led to an invitation from Kirk for Diana to join him on stage the following night at London’s iconic 100 Club, marking a milestone in her personal music career.
In February 2020, Diana participated in the Masterlink Sessions, organized by producer Stefan Redtenbacher with video support from Leo Mansell and music production and mixing by James Welch.
During these sessions, Diana co-wrote the song "Money Ain't No Truth" with Stefan, featuring musicians such as Mike Outram on guitar, Tony Remy on guitar (Incognito), Joe Glossop on Hammond organ (Tom Jones), Mike Sturgis (21 Guns, Asia) on drums, Karl Vanden Bossche (Sade, Incognito, Jamiroquai, Gorillaz) on percussion, Piers Green on saxophone, Paul Jordanous (Rag’n’Bone Man) on trumpet, and Stefan Redtenbacher (Steve Winwood, Sam Moore, Beverly Knight) as co-producer and bassist.
In addition to recording new original material, currently in the mixing process, she collaborated on the debut album of Canadian singer-songwriter Ben McDuff from Quebec, produced by Joe Wazana.