Batch convert folder of MuseScore MSCZ files to PDF

MuseScore-To-Pdf.ps1

Get-ChildItem -File -Filter '*.mscz' | ForEach-Object {
    "Converting $($_.BaseName) ..."

    $tempfile = 'temp.json'

    '* Extract JSON'
    Start-Process `
        -Wait `
        -WorkingDirectory (Get-Location).Path `
        -FilePath """$env:ProgramFiles\MuseScore 4\bin\MuseScore4.exe""" `
        -ArgumentList '--score-parts-pdf', ('"{0}"' -f $_.FullName), '--export-to', $tempfile

    $json = Get-Content $tempfile | ConvertFrom-Json
    $name = Split-Path -LeafBase $json.score
    $filename = $name + $json.scoreFullPostfix
    "* Extracting score $name"
    Set-Content -LiteralPath $filename -AsByteStream -Value ([Convert]::FromBase64String($json.scoreBin))

    for ($i = 0; $i -lt $json.parts.Count; $i++) {
        $partname = $json.parts[$i]
        "* Extracting part $partname"
        $filename = '{0}-{1}.pdf' -f (Split-Path -LeafBase $name), $partname
        Set-Content -LiteralPath $filename -AsByteStream -Value ([Convert]::FromBase64String($json.partsBin[$i]))
    }

    '* Remove JSON'
    Remove-Item $tempfile
}