I have problem with putting quotes inside quotes

Question

I am trying to make one line command in PowerShell to download music file and to execute it every 1 hour
Start-Process -WindowStyle Hidden PowerShell "Register-ScheduledTask Regedit -Action (New-ScheduledTaskAction -Execute PowerShell -Argument "Start-process -WindowStyle Hidden PowerShell '(New-Object System.Media.SoundPlayer C:\Windows\Jjgw.wav).PlaySync()'") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval (New-TimeSpan -Hours 1)) -f;(New-Object System.Net.WebClient).DownloadFile('https://github.com/User/Repository/raw/master/Music.wav','C:\Windows\Music.wav')"
But i just can't setup single/double quotes to go to the last, instead to closest quotes.
I am trying to achive something like this:
PowerShell ""command1";"command2""
To just execute these two commands.

Answer 1

This is asked often. The best way is to use an EncodedCommand:

$command = {
    $action = New-ScheduledTaskAction -Execute PowerShell -Argument "Start-process -WindowStyle Hidden PowerShell '(New-Object System.Media.SoundPlayer C:\Windows\Jjgw.wav).PlaySync()'"
    $trigger = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval (New-TimeSpan -Hours 1)
    Register-ScheduledTask Regedit -Action $action -Trigger $trigger -Force
    (New-Object System.Net.WebClient).DownloadFile('https://github.com/User/Repository/raw/master/Music.wav','C:\Windows\Music.wav')
}
$encodedCommand = [convert]::ToBase64String([System.Text.encoding]::Unicode.GetBytes($command.ToString())) 
Start-Process -WindowStyle Hidden PowerShell -ArgumentList "-EncodedCommand", $encodedCommand