You may have made up your mind as to whether you hear Yanny or Laurel but with Brainstorm and Green Needle you can actually control what you hear. The first time I did it I heard Brainstorm, so I tried it again wanting to hear Green Needle...I did. THEN I tried for Green Needle again, then Brainstorm. Each time hearing exactly what I expected to, FREAKY, Try it for yourself,