Start/End Dates	2012-07-01 through 2012-09-30
Country	Japan

Details

From July 14th, 2012 until September 30th, 2012 players of Pocket Monsters Black and White as well as Pocket Monsters Black 2 and White 2 were able to receive a Meloetta when they visited participating theaters that were showing the 15th Pocket Monsters movie short Meloetta's Sparkling Recital (メロエッタのキラキラリサイタル).


Meloetta can learn the special move Relic Song which allows it to transform from its Aria Forme into its Pirouette Forme while in battle. The move can be learned in Pocket Monsters Black, White, Black 2 and White 2 when players take Meloetta to a cafe in Hiun City where it will remember some past events and will start singing again.


Source: http://www.pokemon.co.jp/ex/meloetta/

Info on Meloetta Event Shown During BW85/86 1-Hour Special

At the end of the BW85/86 special shown on June 14th, 2012, a segment featuring the Meloetta event was shown. The video showed it battling and using Relic Song to change formes.

Movie 15 Preview Showing - Nakano Sun Plaza

On July 1st, 2012, a preview showing of the 15th movie was shown at Nakano Sun Plaza (中野サンプラザ). Meloetta was distributed to the viewers at that showing.