How do you move video clips without affecting music track?

I have Adobe Premiere Elements 15 and I use it on a MacBook Air.  I have about 50 different video clips on the Video 1 track and bout 3 minutes of background music (a single song) on the Music Track.  I am making a music video.  I want to move clips around within the video from one section to another (e.g. change the order in which the video clips appear in the project).   When I move the video clips, my music track splits and forms a gap equal to the the length of the video track I moved. So my music track automatically splits and creates a gap with no sound.  I want the music track to remain unchanged while I move the different video tracks around in the Video 1 track.  I can't figure out how to do that!!!!  Please help.