With 25 drummers and colour guard section, the corps became famous for its demanding six-minute routine performed at the Royal Edinburgh Military Tattoo in 2003.

Top Secret was founded in 1991, with its roots in the rich drumming traditions of the band's home city, Basel, which is known for its annual carnival called Basler Fasnacht.

Segments of their routines feature a rhumba, a drummer's duel, drumstick juggling, exploding flagpoles, and other crowd-pleasing details.

In May 2016, Top Secret Drum Corps provided one of the performances in the 90th Birthday Celebration for Elizabeth II, the Queen of the UK and 14 Commonwealth realms.

For Elizabeth II's Platinum Jubilee the Top Secret Drum Corps performed at the pageant on 15 May 2022 and they are featured in the soundtrack of Mission: Impossible – Dead Reckoning Part One.

[3] Top Secret's members include highly dedicated drummers with diverse day jobs: bankers, civil servants, factory workers, college students, and others.