There are a number of approaches to improvising jazz solos. The Kalbelia have a reputation for composing lyrics spontaneously and improvising songs during performances. That book started all the jazz guys improvising in 12-tone. Tatum had a different way of improvising from what is typical in modern jazz. Frankie did some improvising and re-created the melody to match his own style. He had also become more comfortable with improvising rhythmically within the confines of Riddle's arrangements. The number of scales available to improvising musicians continues to expand. Henry "Hank" Cosby after hearing Wonder improvising on piano. Born in 1970, Ffrench has been improvising on the piano since the age of four. He is known for improvising electronic songs that feature comical lyrics. However, the change was not instantaneous, with more improvising on the guitars and keyboards. Paradoxically, Rachmaninoff often sounded like he was improvising, though he actually was not. There was no clear ending in mind while the actors were improvising. His waltzes are in my improvising to this day. Rather than being fixed works, they indicated ways of improvising polyphony during performance.