Simplify the following text for a Grade 9 native English-speaking person.
Original: Booker T. Jones ( born November 12 , 1944 ) is a musician , songwriter , record producer and arranger .
Simplified: Booker T. Jones ( born November 12 , 1944 ) is a multi-instrumentalist , songwriter , record producer and arranger , best known as the frontman of the band Booker T. and the MGs .