I would practice the transition. Use the few students who are pretty good at transitioning to help you. If there are none use your para. Play the music and demonstrate what good transitioning looks like. Then, have the whole class participate. Reward/praise those who follow through. Even if it is just a verbal praise or a skittle, it goes a long way.

Maybe you could do a freeze type game with the transition music. Stop them a few times mid transition and tell them that by the 3rd freeze they must be done cleaning or back to the carpet, or where-ever they are supposed to end up.

I used visual timers, visual schedules, and prewarning transitions for some students. If I had a student who had extra transitioning issues, I would have a velcro green card/red card on his desk. About 1 minute prior to transitioning, I would flip his card to green so that he could prepare to transition. This worked wonders for him.

You could still play music but maybe get one of those stuffed animals that sing and move (they sell them for every holiday and season, so you could change out) and make it a race that the children have to try to clean up and be back on the rug before the stuffed animal stops singing and dancing. This way they can still dance just after they finish cleaning.

Beginning the school year I implement transitions that are part of our "routine" and this continues until students are aware of the daily schedule. The transitions remain the same. Routine is key for these students and an important factor in classroom management. I always give my students a heads-up that we are about to begin something new. We have a Bumble Bee song that we sing when transitioning to the circle time rug. The students sing it, sit down and place their hands in their laps. We do the same when lining up to go outside. There is a learning and teaching preschoolers website that is helpful as well (learningandteachingwithpreschoolers.blogspot.com).

I give small pieces of paper with eagles on it for rewards. The students use the eagles to get rewards. This really helps with my transition.

A possible solution would be to thoroughly explain the transition before making the move, then as the students transition quietly and properly reward them with a marble or something they can accumulate until the end of the week then turn in for a prize. If you have all of the 5, 10 or however many marbles at the end of the week they get a prize.

music is a great tool for transitions but words to the song I have found are the key to successful transitions. I have a song for outside and inside transitions indicating when we need to become quiet and when we can get loud again.

Instead of music, I would have a bell until the students can figure out how to transition appropriately. This is done in time, I would not try to rush this with this age group.