execute unless score levelSel levelSelect matches 0..21 run scoreboard players add levelSel levelSelect 0
execute if score levelSel levelSelect matches ..20 run playsound minecraft:block.note_block.cow_bell master @s ~ ~ ~ 1 2
execute if score levelSel levelSelect matches ..20 run scoreboard players add levelSel levelSelect 1
execute if score levelSel levelSelect matches 21 run scoreboard players set levelSel levelSelect 1