 His first cello teacher was Frederick Teller, a local teacher whose ideas, for the time, were exceptionally forward-looking.At sixteen, Rejtő entered the Academy of Music under Adolf Schiffer (a pupil of and later assistant to David Popper), and two years later, with his Artist’s Diploma, he began his European concert career.From the age of 20, Rejtő studied with Pablo Casals for two years, first in Barcelona and then in Prades.