Maybe it's not very "magic", but have you tried the "reverse echo"?
Record line, reverse it, apply echo/reverb, reverse again, apply another reverb stage. If done correctly it can be very eerie.
Maybe it's not very "magic", but have you tried the "reverse echo"?
Record line, reverse it, apply echo/reverb, reverse again, apply another reverb stage. If done correctly it can be very eerie.