Switching first and last name of Artist

[ohrenkino]

@Bullfrog

Fromatstring: $regexp(%artist%,(.*)',' (.* ),$2 $1)

Try
Format string: $regexp(%artist%,'(.*), (.*)',$2 $1)

Take care of those artists that have the comma deliberately like Bell, Book & Candle, Earth, Wind & Fire, Emerson, Lake & Palmer etc.