Seeing a drummer in your dream symbolizes joy and celebration. It may indicate that happy moments are on the horizon for you. However, if the drummer appears near a sick person, it could foreshadow that person's death, suggesting that drums will be played at their funeral. Thus, this dream image can relate to various emotions and situations in your life.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Drummer" (page 130).
In a dream, a drummer represents festivities and joy. If a drummer visits a sick person in a dream, it means that the latter will shortly die and that drums will play at his funeral. On the other hand, it could mean that the sick person may recover and people will rejoice for his recovery and play music and drums to express their joy. A drummer in a dream also could represent someone who breaks the news. Seeing a drummer in a dream also may denote a colic illness. A drummer in a dream also represents a strong and an alarming person. A drummer in a dream can also be interpreted as one's abdomen, or someone who brings false news, or a procurer, or someone who calls people to falsehood. (Also see Drum)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.