Are both Kai Hansen and Piotr Wiwczarek known for being guitarists for their respective bands?
Kai Hansen Kai Michael Hansen (born 17 January 1963) is a heavy metal guitarist and vocalist.
Sinergia Sinergia (Spanish for "Synergy") is a Chilean band that plays experimental rock with influences from alternative metal, a style that themselves define as "birdy metal" by the incorporation of "pajaronas" (birdy) lyrics; which is Chilean slang referring to people that are a bit vague or slow to understand. Sinergia plays with the mixing of a strong rock sound with an electronic base, funk bass lines and special sounds for each song.