A short variation of the Sing, Meloetta: Search for the Rinka Berries OVA special was posted on the Japanese official Pokémon YouTube channel. The main differences between the two variations is the omission of most of the introduction to the special and a complete new narration for the shorter version. The full version was made available on the DVD accompanying the August issue of the Ciao magazine. Below is the video.


Source: http://www.youtube.com/user/PokemonCoJp

Just watched it yesterday on Youtube.
It was really cool, though a tad repetitive. I quite liked the artstyle for some reason.