Top 10 Extreme Progressive Metal Songs of the 21st CenturyExtreme Progressive Metal bands use harsh (unclean) vocals to create intensity. Harsh vocals are sometimes combined with clean vocals (cleans are provided by the same or another singer).
Extreme Progressive Metal songs often have both heavier and softer parts.
Most of the Extreme Progressive Metal bands are Progressive Death Metal bands but some of them prefer to be called Extreme Progressive Metal for different reasons - for example, harsh vocals can be closer to those in black metal than in death metal, or can include some other non-standard genre combinations.
Unique sound, amazing composition, non-standard instrumentation, duets of clean and harsh vocals, great contrasts that work well together, build-up that perfectly creates the needed intensity (esp. 5:30-6:40), and so on.
This song may need more than 3 listens to be fully appreciated. - Metal_Treasure
Djent guitar sound and mindblowing drumming in the odd 13/16 time. - Metal_Treasure
This is one of the softest songs on this list and probably the softest Obscura song (so far). It doesn't mean it's easy listening though - prog metal is never easy listening, haha.
This song is with fretless bass played by Jeroen Paul Thesseling. - Metal_Treasure
It has different parts and I like the most "Act I: Goddess' Wrath".
Get ready to get proggy - this song is 23:43 minutes long. - Metal_Treasure
It includes an odd time signature - 21/16 - Metal_Treasure
Extreme prog metal instrumental (guitars Ron Jarzombek) - Metal_Treasure