What is the different between an SR Form and a PA Form? If I have copyrighted a song in the past, but planning on using it again on a newer album. Do I copyright the new album without that one song on there? Or leave it on there? What exactly does it mean to be a co-writer? Does this mean only for lyrics, or if one person makes the instrument lines, and another person makes the vocal lyric lines, are they both the co-writers? Thank You, and God Bless You All!