UMUR "Razón de la muerte" is the debut full-length studio album by Dutch thrash metal act Decision D. The album was released through Crypta Records in 1992. Decision D formed in 1986 and released the "Testimony of Faith" demo in 1990 and the "Testimony on Stage" live demo in 1991 before being signed for the release of "Razón de la muerte".

The first track of the album "Diabolic Shadow" opens with the lyric line "Satan, we come against you in the name of jesus christ" and ends with the line "Fear god and give him glory because the hour of his judgement has come Worship him who made heaven and earth.", and that should give the reader a pretty good understanding of the lyrical content of "Razón de la muerte". Needless to say that the lyrics carry a strong Christian message.

Stylistically the music is technical thrash metal with the odd nod towards death metal (I hear more than one nod towards the sludgy heaviness of Morbid Angel, and the technical riffs of Death). The tracks are technically challenging and relatively complex, and the band are very well playing. Lead vocalist Edwin Ogenio has a rather distinct sounding voice and delivery, which are probably an aquired taste. He sings in a raw and sort of desperate sounding staccato thrash metal vocal style, but occassionally a semi-growling death metal grunt is heard.

The sound production is decent for the time with slightly thin trembly guitars, a sharp drum tone, and the vocals up front. Upon conclusion "Razón de la muerte" is a good quality technical thrash metal album (with a few death metal traits), but it´s neither groundbreaking or particularly unique other than the relatively odd sounding vocals. A 3 star (60%) rating is warranted.