Is this a Perfect 5th or a Perfect 4th?

I decided to create this little addendum to my recent Circle of Fifths video after I received a lot of comments about whether these chord changes are 4ths or 5ths. You can see the original video here:    • Songs that use the Circle of Fifths progre...   Extra info on the "Circle of Fifths chord progression": https://www.secretsofsongwriting.com/.... And, an extra special thanks goes to Douglas Lind, Vidad Flowers, Ivan Pang, Waylon Fairbanks, Jon Dye, Austin Russell, Christopher Ryan, Toot & Paul Peijzel, the channel’s Patreon saints! 😇 SUPPORT ME ON PATREON:   / davidbennettpiano   🎹