It's a synth of an orchestra string section. String ensemble.

Which version, the video or the one with the layers? The video was more of a novelty to prove I could actually play it. I did videos of "Hades", "Follow the Reaper" and "Rust Never Sleeps" too.

And no they aren't. I've done quite a few by Kalmah, but there are also some Insomnium, Led Zeppelin, Children of Bodom, Norther, and Iron Maiden. In the future I plan to do more of Led Zeppelin, some Thin Lizzy, Rush, and Iron Maiden but mold them into this style.