There are at least 7 bands called Post Scriptum:

1) Polish Thrash Metal band formed in 1991 in Kamienna Góra, Poland. www.post-scriptum.com.pl

2) Techno Producer residing in Berlin. Recently released Post Scriptum 01 on his label Infrastructure NY. https://soundcloud.com/postscriptumlive
3) Lithuanian pop music band.

4) Romanian jazz-rock fusion band.

5) Russian Melodic Death/Thrash/Metalcore band

6) Bosnian reggae band.

7) Death metal band from Pernik, Bulgaria, formed in 2000. Actually, one of the members is from Sofia, Bulgaria. Check out their official MySpace profile at http://www.myspace.com/postscriptumbg. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.