The Brief: The "Mi Pan Su Su Sum" viral track originated in Russia. It is a 2010 jingle for Miel Pops cereal.

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8/24/2020, 1:26 p.m. PT: Th article has been updated to include TikToker @chernaya.princessa’s original a Capella version of the Miel Pops cereal jingle.
The “Mi Pan Su Su Sum” track is a viral, international sensation with its popularity tracing back to a dancing llama and photos of bread. The track, which was initially interpreted as Spanish, appeared to be about bread, is actually in Russian. The jam is a 2010 Russian jingle for honey flavored cereal Miel Pops. The original commercial features animated bees dancing inside of a honey comb to “Miel Pops, zu zu zu.”
The version spreading on TikTok was first shared by @isterrrrika on June 1. That audio was actually a sped up version of TikToker @chernaya.princessa’s performing an a Capella version of the Miel Pops commercial. She shared it on May 27.
@chernaya.princessa это войдёт в список самых странных вещей, которые я решала сделать #мяу #рек #мильпопс #жужужу #втоп #тренд #популярное
@chernaya.princessa Yes, It is my accelerated voice. Miel Pops )) I just did a cover on russian commercial about cereal
@Isterrrrika’s video received well over 1 million likes, the song became a viral sensation after @awa_de_horchata_uwu’s red llama video exploded on Alt-TikTok after it was shared on July 13. Since then, the tune has spread to Straight TikTok and Twitter.
@unpaulished this audio is a blessing 😍 #fyp #NobodyNeedsToKnow
@tonylopez Reply to @myst1232 why is my comment section this rn?
@txentogi
my mom: are you listening to me?
my mind: Mi Pan Zu Zu Zu, Zu Zu Zu. Mi Pan Yakakunas ñaM ñam ñam pic.twitter.com/YoOrdMoJ7g
— Manmit. D (@Manmitkd) July 29, 2020
“mi pan zu zu zu zu zu zu, mi pan atashkoshni yum yum yum, mi pan hahahahahaaaaa zuzuzuuu” pic.twitter.com/Oedk73rGFl
— 𝐌𝐚𝐤𝐡𝐚𝐝𝐳𝐢 𝐃𝐢𝐨𝐫 (@KhulisoKMahosi) July 30, 2020
It’s my birthday month so you know it’s a whole lotta mi pan zuzu zu zuzuzu shiiiii… pic.twitter.com/PRkTdWIyrA
— Yini wena? (@mihlali_jiya) July 31, 2020