Why it worked
The video likely resonated due to its relatable creator-centric content within the music production community, specifically targeting users of FL Studio. The use of a popular meme format (expressing confusion/shock) combined with a visually interesting display of a complex beat likely captured attention.
Summary
The video shows a music production software interface, specifically FL Studio, displaying a complex beat pattern. The on-screen text and caption express surprise and confusion about who would rap over such an experimental beat, indicating the creator is showcasing a beat they made.