[1] Soon afterwards he landed on the legitimate stage, appearing next to one of Italy's leading stars of the time, Duilio Del Prete, in the national premiere of Franz Xaver Kroetz's Death on Christmas Night.

Having made some early experiments in the late '90s with a production called The Other Woman,[5] in 2002 Tomasini started to create (in various capacities) his own shows and first attracted attention with an appearance at the Edinburgh Festival with True or Falsetto?

For the past 17 years he has been lending his wide vocal range to experimental music, singing an eclectic repertoire written for him by a multitude of musicians, and, in the process, becoming an international cult figure.

A wide vocal range combined with his melodramatic delivery have interested the press: Frontiers magazine described him as "the most exciting and flamboyant personality to shake up the opera world since Klaus Nomi"[16] and Italian newspaper La Repubblica called him a "prominent figure in avant-garde circuits with his seducing high voice reminiscent of those belonging to evirated singers".

[17] In 2024 he sang in Franco Maresco's Jazz nights at Teatro Santa Cecilia (Palermo), in London's Crazy Coqs and was singer and actor in “Derek Jarman’s Blue Live” by composer Simon Fisher Turner, at the National Cinema Museum in Turin, Italy.

[19] In 2022 he sang Cabaret chansons from the early 20th Century, with soprano Hila Baggio, directed by Omer Meir Wellber, at the Teatro Massimo in Palermo and at the Toscanini Festival in Parma and Reggio Emilia.

[21] Other collaborations include Marc Almond, the late "father of industrial music"[22] Peter Christopherson (founder of Coil, Throbbing Gristle and Psychic TV),[23] Current 93 (he was special guest at their first Queen Elizabeth Hall concert, alongside Anohni),[24] electronic producer Shackleton (who wrote for him "Devotional Songs“, the critically acclaimed live show and album, which was among the best of 2016 for The Wire, The Quietus and many more),[25] producer Man Parrish (on two tracks in compilation albums, one with Joey Arias),[26]Julia Kent (Antony & the Johnsons), Andrew Liles (Nurse With Wound),[27] Rolo McGinty of The Woodentops, Spiritual Front, members of Larsen [it], Othon, Adam Donen and José Macabra, with whom he opened the 2011 Drop Dead Festival in Berlin.