Complex sentence: Willie wanted to give Bleeding Gums his saxophone, only to be finally told that it wasn't a saxophone and actually an umbrella, meaning that Willie had actually been playing an umbrella for some forty years.
Split into simpler sentences: Willie wanted to give Bleeding Gums his saxophone, only to be finally told that it wasn't a saxophone and actually an umbrella. Meaning that Willie had actually been playing an umbrella for some forty years.