IsPlaying random song help? [Script Included]

This script doesn't work? I put it inside a model with a couple of other songs and I put the songsID, but nothing happens, and nothing in the output. Please help?

local songs = script.Parent:GetChildren()
while wait() do
for i = 1, #songs do
songs[i]:Play()
repeat 
wait()
until not songs[i].IsPlaying
end
end

IsPlaying is glitchy at the moment on roblox. Sorry.