Complex sentence: Ken rejoined the Merchant Navy and jumped ship to get to New Orleans where he played with his idols in the George Lewis Band where he was offered the job of lead trumpeter on a tour but was then put in prison and deported.
Split into simpler sentences: Ken rejoined the Merchant Navy and jumped ship to get to New Orleans where he played with his idols in the George Lewis Band. He was offered the job of lead trumpeter on a tour but was then put in prison and deported.