Complex sentence: Danny Jacob (born October 8,1956) is an American composer, songwriter and guitarist best known for composing the score for "Phineas and Ferb" and singing some songs in the show.
Split into simpler sentences: Danny Jacob (born October 8,1956) is an American composer, songwriter and guitarist. He is best known for composing the score for "Phineas and Ferb" and singing some songs in the show.