I also want to mention some of my favorite Disney songs (again, so difficult!) but figured that the comment about my favorite movie was already long enough.
In this case, I don't think I can choose an absolute favorite song. Instead, I'll list just a handful of greats (though there are many more that I wish I could include but I don't want this to become a full essay). So, in no particular order, here is my list:

• "Go the Distance" from Hercules
• "I Won't Say (I'm In Love)" from Hercules
• "Colors of the Wind" from Pocahontas
• "Feed the Birds" from Mary Poppins
• "Beauty and the Beast" from Beauty and the Beast
• "Circle of Life" from The Lion King
• "Reflection" from Mulan
• "I'll Make a Man Out of You" from Mulan
• "Almost There" from The Princess and the Frog
• "Dig a Little Deeper" from The Princess and the Frog
• "I See the Light" from Tangled
• "Part of Your World" from The Little Mermaid
• "Let It Go" from Frozen
• "Show Yourself" from Frozen II
• "How Far I'll Go" from Moana
• "Remember Me" from Coco