Sentence 1: In 1941 , he joined the London Philharmonic Orchestra ( LPO ) as second trumpet and became a solo trumpet in 1943 .
Sentence 2: In 1941 he joined the London Philharmonic Orchestra ( LPO ) as second trumpet and became principal trumpet in 1943 .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?