Trying to play "day1" freezes game

"day1" location: resourcepacks\playsound\assets\minecraft\sounds\day1.ogg
sounds.json location resourcepacks\playsound\assets\minecraft\sounds.json

sounds.json:

{
"day1": {
"sounds": [
"day1"
]
}
}

command: /playsound day1 voice Vankka ~ ~ ~ 1.0 1.0