Pia Toscano to Perform on Dancing With the Stars Next Week? Plus, Idol Cast-Off Reunion Tomorrow

According to TMZ Pia Toscano will sing on Dancing with the Stars next week:

Pia Toscano Will Sing on ‘Dancing’ … For Mark

He’s doing her, and now … she’s doing his show — TMZ has learned, Pia Toscano will be performing on “Dancing with the Stars” next week … and get this, her new BF Mark Ballas will dance to her music.

It’s been in the works for a while — and an hour ago, the deal was sealed.

Pia’s performance signifies a borderline incestuous cross-pollination between the two biggest shows on TV … “American Idol” and “Dancing.”

And if that’s not enough — Pia will be back on “Idol” tomorrow for a special cast-off reunion.

How is FOX and ABC OK with this arrangement? They must believe the cross-polination benefits both. Very strange indeed…