Complex sentence: The baritone horn is also a common instrument in high school and college bands, as older baritones are often found in schools' inventories, however, these are gradually being replaced by intermediate-level euphoniums.
Split into simpler sentences: The baritone horn is also a common instrument in high school and college bands, as older baritones are often found in schools' inventories. However, these are gradually being replaced by intermediate-level euphoniums.