Final answer:
John Philip Sousa is the most renowned American band composer, known for his marches and concerts.
Explanation:
John Philip Sousa is the best-known American band composer. He was a prolific composer of marches and led a successful band known for its concert performances around the world.
On the other hand, Stephen Foster was a well-known songwriter of minstrel music, not primarily known for band compositions.
John Philip Sousa's marches are still popular today for their functional use in marching music and their enjoyable concert performances.
Learn more about American band composers here:
https://brainly.com/question/32151494
