Here are my suggestions. Some pop songs that are easy to understand, the vocabulary in these is not this tough.
Clean Bandit ft Jess Glynne- Rather Be (One of my favorite songs EVER!)
Ed Sheeran- Thinking Out Loud and Photograph
Dj Snake and AlunaGeorge- You know you like it
Fall out boy- Centuries
Taylor Swift-Blank Space
I think listening to music is one of the most effective ways to learn vocabulary, They help me so much