Working on a tune

Arranging this song my brother in law, Tre, wrote for his wife, Jennie (my super, awesome sis-in-law). Their good friend, Michelle, put his ideas to notes and I’m trying make it work for a CD. The original song is on a tape cassette (ha! Do those still exist?). So I had to go to my father-in-law’s to retrieve his dual cassette machine that we used to get it digitized.  BUT-these KIDS of mine won’t let me get any practice time in. Second born likes to come in and hit the keys every time I try to practice!