When my fiancee showed me this, it took me almost a dozen watches to finally hear the one I didn't initially hear. I don't remember for sure which one I could hear at first, but I think I only heard "green needle", which was higher pitched, and it took me a lot of concentration to block that out and focus on the lower pitch enough to be able to parse out some semblance of speech. If my recollection is correct, my troubles with the lower pitched sound is a little ironic because I play bass and often try to point out bass parts I like to my fiancee, but she sometimes has trouble parsing out exactly what I'm referring to due to not having had any musical training and it not being as obvious to her which part is the bass when I'm showing her a song with lots of different guitar and keyboard tracks and lots of heavy bass drum.