Simplify the following text for a Grade 12 native English-speaking person.
Original: Dudamel debuted with the Philharmonia , the Israel Philharmonic , and the Los Angeles Philharmonic , among others , in 2005 , and also signed a recording contract with Deutsche Grammophon .
Simplified: He soon became well-known and conducted the Philharmonia , the Israel Philharmonic , and the Los Angeles Philharmonic . He signed a recording contract with ( ( Deutsche Grammophon .