I just grabbed my Epiphone SG, because I had just finished watching The Big Sick. I heard a melody and a bass line idea in my head. I sang it to myself...it was very basic (I only had the initial melody that you hear in the first section).
I added the drums using EZ Drummer 2. I basically played them by hand on the keyboard and then quantized them.
I love how it came out. It also lead me to making this OTHER song that had vocals using the same sounds in the exact same Pro Tools session. The idea was so fresh and fragile I was afraid to close the session down and start a new one, so, I just did it right there ahead in the timeline. You can hear THAT song here: https://fawm.org/songs/89584/
it's an instrumental, yo.
but you can write your own lyrics in your head if you want.