UMUR "Red Demo" is a demo release by US, California based thrash metal act Sadus. The original cassette tape demo was self-released in 1994. It was the last release by the band to feature guitarist Rob Moore. Despite having released three albums at this point, and being a relatively well known name in thrash and extreme metal circles, Sadus were without a label after their deal with Roadrunner Records ended. Thus the need for releasing a demo to shop for a new label. It would be three long years in addition to the two that had already passed since the release of "A Vision of Misery (1992)" (the band´s third full-length studio album) before the band were signed to Mascot Records for the release of "Elements of Anger (1997)".

"Red Demo" features 4 tracks and a full playing time of 15:14 minutes. "In the End", "Power of One", and "Fuel", would appear on "Elements of Anger (1997)" in re-recorded versions, while it wouldn´t be until 2006 with the release of "Out for Blood", that "Black March" would appear on a studio album (also in a re-recorded version), albeit only as a bonus track.

The material is in the trademark aggressive thrash metal style that Sadus have played since day one. It´s a bit more mature and varied than the first couple of releases by the band, but the core style is intact. The quality of the material is relatively high and the sound production is decent too, so all in all "Red Demo" is a fairly good quality demo release, and it serves it´s purpose well, which is shopping for a new label. A 3 star (60%) rating is warranted.