In 1995, Frangoulis returned to London to play the role of Lun-Tha in the Rodgers and Hammerstein musical "The King and I" during the Covent Garden Festival. This highly acclaimed performance received great comments from a number of newspapers including the Times and "The Guardian". He also sang the title role in the musical Yusupov in Oxford as well as Johnny in "Sail away" (Savoy theatre in London). In 1995 he participated in the recording of Bernard J. Taylor's rock opera "Nosferatu the Vampire". He also sang as a Les Misérables alumnus in the Tenth Anniversary Concert of the show at the Royal Albert Hall.