Question: What was the former name of the Swedish band formed in 1989 with a music style that employs highly melodic guitar riffs, often borrowed from traditional heavy metal?
Sentence (from "Dark Tranquillity discography"): As of 2013, their formation consists of vocalist Mikael Stanne, guitarists Martin Henriksson and Niklas Sundin, keyboardist Martin Brändström and drummer Anders Jivarp.
Relevant evidence: No