Singing pop punk...

Growing up I was always sort of interested in singing, did choir, yadda yadda. Always had falsetto that my peers didn't, etc. Had never really "tried" to do it for the sake of necessarily sounding good, per se, just have always loved to make melody with my voice. I sing around my friends and family all of the time with a goofy falsetto because, well, what's good for the birds... I was singing "I Can Show You The World" as a camp leader and the boys I was the leader for said, "I didn't know you could sing" and I was like, "Well I never really thought about it"

There was a video on Instagram that went viral where a dude was singing "Dear Marie, Count Me In." And I was like, "Hey, I can hit those notes pretty well when I'm singing it." So I tried to apply that to other pop punk songs that I'm into and am pretty good at doing 100% on many, 95% on others, and maybe maxing my range at 85% on others, where I would just have to choose another note. Lame.

Anyways, what I notice is that I'm really stressing my vocals if I do it for too long.

Alex Gaskarth of All Time Low mentioned that when he first started singing, he didn't really know what he was doing and really stressed his vocals. I feel like I'm in that place; I can "do" it, generally comfortably, but doing it definitely takes a toll and after 4 back to back songs with intense energy, I can't hit those notes. My range tops out much lower.

"I Slept With Someone In Fall Out Boy And All I Got Was This Stupid Song" I can do 100%.

"Forever Young" (not pop punk of course) I can do like... 97.5%

"Dear Marie, Count Me In" is an easy 100%

"Fake Out" is an easy 100% if it's the first song I sing, but the bridge is challenging if I've already sung 4 or so songs before.

What do you do with this? How do you improve your ability to hit those notes while singing more back to back? If Alex Gaskarth did it, I think I can, too.

Any insights into this?