Notepad++ find and replace after specific character

Question

I have hundred of song lyric database files, and I need to do something like this,

from this :

 PPK4: B'rilah Hormat Pada Hu
 Judul Inggris: Glory to God in the Highest
 Lagu: unknown Syair: unknown
 1=A, 4/4

to become like this :

PPK4: B'rilah Hormat Pada Hu
B'rilah Hormat Pada Hu
Judul Inggris: Glory to God in the Highest
Lagu: unknown Syair: unknown
1=A, 4/4

PPK4 is a song number. so, there will be like PPK1 until PPK255, KPPK1 .. KPPK300 etc. and same format, "#songcode" ":" "(space)" "song title" "CRLF"

How do I do it using Find and Replace?

Answer 1

The answer involves regular expressions. You could try "([A-Z]+[0-9]+[:])(.*)" This will capture the song number as group 1 and the song title as group 2. You can then replace this with "\1\2\n\2", i.e. group 1 followed by group 2, a newline and group 2 again.