to make it you have a jug or bottle.
Step 1: Get a Glass Jug or Bottle
This works well with a wine bottle, olive oil bottles, large glass jugs, and any other glass container with a skinny neck.
Step 2: Bore a Single-sized Hole in the Bottom
Use a glass cutter to cut a small hole in the bottom of the bottle or jug.
Step 3: Blow Across the Hole That Is Already in the Top of the Jug
Position your lips so that you're blowing horizontally right over the opening. Keep blowing until you get a clear note. This may take a while, so be patient and keep practicing.
Step 4: Cover and Uncover the Hole on the Bottom With Your Finger
Do this as you blow, and experiment with the different sounds it produces.
Step 5: Try Tilting Your Head Down and Up to Make the Note Sharp or Flat
keep your head down and up to make it sharp or flat.