Simon Cowell Putting Together AMAZING Group To Make Song For Japan!!!

Simon Cowell has announced via Twitter that he's putting together one hell of a group to make a song for Japan. Here's what he tweeted about it yesterday:
Ok, For What Has Happened In #Japan I Will Be Getting Loads Of Singers To Do A Song For It, @justinbieber @britneyspears @katyperry And More
And here's what he tweeted today:
We Now Have More Singer's To The Song @JLSOfficial @onedirection @ollyofficial @katyperry @justinbieber @jessiejofficial @CherLloyd And More gooooood!!!!!!