Gosh, sure is #summer in here... Wait, what site am I on again? :P My suggestion would probably be Periphery's "Racecar"; it's a FIFTEEN MINUTE song, but it's a must have for anyone who wants to indulge their heavier side, whilst embarking on an epic musical journey, all in one song. One of my favorites <3
One could make like 5 different songs out of that. Holy shit the range of that singer.
Spencer Sotelo is one of my favorites in the djent genre, he has some RIDICULOUS range. Another band you might enjoy if you liked Racecar would be Monuments, specifically their song "I, the Creator"; I usually listen to the guitar part of any song first, but when they released the album track of the same song, I was absolutely blown away. Chris Barretto is INCREDIBLY talented, and I can't wait for more from them.
I love these songs, but they're not exactly "chill". Still great though!