SHINee's Key and Infinite Woohyun form a duo named 'Toheart' and will be releasing an album soon.

The news about their collaboration has been up quite sometime but details aren't released yet until today when SM releases the video prologue of the two.

A short clip shows Key and Woohyun having fun around with sparklers on their hands. They are giving off some lively and exciting yet relaxing mood.

Further details will be released soon so stay tuned! Watch the video prologue below: