Jazz rehearsal bands are groups formed to practice, refine, and explore jazz music together. These bands typically consist of a rhythm section (piano, bass, drums, guitar) and a horn section (saxophones, trumpets, trombones, etc.), but the lineup can vary depending on the focus of the group. They often play both standard jazz repertoire and original compositions, working on improvisation, ensemble playing, and arrangements.
The LPs here are musicians who would gather to play on their one night off from their regular music jobs. They were able to play some of the best music of their own choosing.
The United States military is home to several prestigious bands, each representing different branches of the armed forces. These bands play a vital role in public ceremonies, official functions, and ceremonial events, and they also help maintain morale and foster national pride.