Angry opera singer

Sam
My 4 month old has turned into an angry opera Singer! Over the last few weeks she has discovered octaves and frequencies that borderline the sound barrier 😜😜😜 and the 4 month regression is coming along in all its glory. She actually gets annoyed and starts shouting.. Not crying or pleading, but shouting. She's getting stubborn.. 😱 
Her new thing now is to grunt super hard like she is constipated if she's not able to move or roll over. You can't tell if she wants to poop real bad or just wants you to get out of the way 😂😂
Oh the fun times!! 😬 who else is with me on this?