It's not really my view since that's just what the sub-genre is called. Typically the "tech" label refers to the technical difficulty of playing the music. I haven't learned to play any Voivod songs so I don't know how difficult they actually are; I just know they're thought of as one of the sub-genre's key early bands.Just curious. Having sampled your recommendations online, what－in your view－makes them "technically advanced"? Is it their cover of a 1967 Pink Floyd song?