Easy! The Hebrews are playing their music as a distraction by going around Jericho as God is checking to make sure their brittle adobe wall falls down by overcapacity. Scientists discovered that all walls are suppose to fall backward when the enemies attack. However, this one, it fell forward. It fell forward because the people of Jericho keeps climbing to their wall before it collapse forward. There is too much weight on the wall; their attention has gathered to see the distraction. That's pretty smart; that sounded like James Bond who infiltrated how strong the wall really is. The wall of Jericho fell because of the distraction of music from the Hebrews who wants them to climb that wall in order for that wall to be destroyed by Jericho's population. It's as if General Nathanael Greene who harass the British by teasing them to come into a trap, for example. God has done that like how Nathanael Greene will tease the enemy to come. Well, climbed it and the wall fell forward from overcapacity.