Answered by Shaykh Amjad Rasheed
Is there a difference between the drum that is open-ended from one side and other types of drums?

If a drum is of equal circumference on both ends and in the center, it is permissible whether one of its ends is open or not, but if the drum is wide on the ends and narrow in the middle, it is haram, whether one of the ends are open or not, this is the position of our school.