Following your example, you could use an action of the type "Format value" for unsyncedlyrics
Format string: stndard text$char(13)$char(10)%unsyncedlyrics%
BUT: UNSYNCEDLYRICS should have the language token in front.
So it may be better to split the field with a regular expression:
Format string: $regexp(%unsyncedlyrics%,'(.)|(.)','$1|standard text\r\n$2')