I mean this is just a fun fact thought it might be cool to share
So compare these 2 fancams
One interesting thing you notice is at 0:44 mark for both videos, Jae is singing the chorus. At this part, Jae is playing the "rhythm guitar part" while Sungjin is playing the "lead guitar part". And at 1:42 mark, Sungjin is singing the chorus. At this point, they actually SWITCH PARTS, that is Jae plays the "lead guitar part" and Sungjin plays the "rhythm guitar part" instead. You can see what I mean in both videos from the way they play the guitar.
This is really interesting because it shows how well thought out everything is. When Jae/Sungjin is singing, the one singing will play the easier part, while the one not singing will play the harder part. This is because it's harder to sing and play a complicated guitar riff, and hence the other party can concentrate on playing the guitar riff, while the one singing can focus on singing and play the easier rhythm part.
Also watch this
The bass part is SUPER COMPLICATED to play, and Young K pulls it off. What you might or might not have noticed is the lines given to him. He is given lines that are easier to sing, and not given any chorus lines. Most of his lines are "breathe in and out" or that proper line that he has, he isn't playing the bass at all. This is because the bass part is super hard so the way Day6 does and allocate the lines is that they give Young K easier lines to sing so that he can focus on the bassline. You can see in this fancam compared to many other fancams that he is extra focused and maybe tad more stressed playing the bass because it's a hard song to play.
The thing is unlike other bands not just KPOP but even in the Western industry, most singers of bands just focus on singing, while Day6 sings and plays instruments at the same time
I just thought that this might be a fun cool fact to know even though most of y'all don't really care. It really shows the artistry of Day6, how well they plan out their lines, their lyrics, their instruments even down to who to play which part to make the entire performance better.
Day6 is one of the best music artists in the industry right now and people need to know that. They write all their songs, co-produce all of their songs and play all their own instruments. What's not to like?