Self Defense

[SF-Dano]

I brought this up in an earlier thread, but never got a response.

It has been established that the tune Self Defense was originally penned for the Frontiers Album.

Just curious if anyone knows whether or not Perry cut his background vocal tracks before the song was moved to Schon and Hammer or if he came in to the studio with Neal and Jan to do the backing vocals?

Again just curious if anyone has any info on this.