If you dream of a banjo, it relates to various aspects of your life. It may symbolize business dealings, duplicity, and a lack of honesty among people. Through the banjo, you might realize that there is betrayal or dishonesty among those around you. Additionally, it can indicate that you are sensing the influence of some unseen forces that are impacting your life.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Banjo" (page 28).
In a dream, a banjo repre sents people's common business, double-dealing, scrupulousness, adultery, playing chess, sorcery, a medium, evocation of spirits, calling on jinn spirits, being possessed by jinns or similar effects. A banjo in a dream also represents the leader of such a band of people and it denotes distress and sorrows. Playing a banjo with strings made from animals' intestines in a dream also represents a wise man admonishing or reprimanding people. Playing a banjo in a dream also means sorrow. To tap on a banjo in a dream denotes nostalgia. Listening to the music of a banjo in a dream means turning one's attention to lies. (Also see Musician; String Instruments)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.
