Which musical term signifies a joyful disposition?

The term that signifies a joyful disposition is "fröhlich." This word is of German origin, and it directly translates to "cheerful" or "joyful." In the context of music, when a piece is marked as "fröhlich," it often suggests a lively and bright character that reflects happiness and an upbeat mood. This is commonly seen in various musical styles where composers intend to evoke a sense of joy and exuberance in the performance.

The other terms do not convey the same sense of joy. "Gebunden" typically relates to a smooth or connected style of playing. "Geschwind" denotes a quick or swift tempo, which doesn't specifically imply joyfulness. "In relievo" refers to music that should be played in a prominent or lifted manner, but again, this term does not carry the same joyful connotation as "fröhlich."