High School Musical music video performed by younger cast?

I can't confirm the existence of this, but I remember back in 2007, around the time High School Musical 2 had aired on Disney Channel, a music video of the song What Time Is It came on the air during a commercial break. From what I remember from this video though was that while it the same set and dance and all, the performers looked a little bit younger from the actual cast of the movie. Like they was pre-teens performing instead of the actual cast of High School Musical. Now again, I can't confirm the existence of this because it could've been a vision in my head, or it could've just been the fact that the cast was quite young at the time. But if anybody can also recall this or a similar presence, I'd like to hear from y'all.