How can the pitch change of an banjo?

The pitch of a banjo can be changed by adjusting the tension of its strings, which can be accomplished through tuning pegs. Tightening the strings raises the pitch, while loosening them lowers it. Additionally, changing the gauge of the strings or altering the bridge height can also impact the overall pitch and tonal quality. Finally, the use of a capo allows players to change the pitch of the banjo without retuning the strings.