- Romaji: tetteterette
- Official English: tettey-terettey
Uploaded December 30, 2015 (NND) and February 21, 2016 (YT), with 1,595,000+ Niconico views and 1,259,000+ YouTube views
"tettey-terettey" is an original song composed by GYARI with Kagamine Rin/Len, Megurine Luka and Yuzuki Yukari.
The title of the video on Nico Nico Douga is Vocaloid-tachi ga Tada tettey-terettey Suru Dake (ボーカロイドたちがただﾃｯﾃｰﾃﾚｯﾃｰするだけ), Vocaloids just go tettey-terettey.
This song was released as a single.