What is the likelihood of this happening?

I would say almost zero.

Here's what happened: I was doing some leisurely work on my computer whose rules - my leisurely work rules - permit me to listen to some background music from my laptop's music player. As I began reading this article on how to generate more reader traffic to a blog, Remmy Ongala's composition Karola (read also "Carola") also began playing on my player.

As I scrolled down to the comments section of the article guess who also commented on that article? Carola! I thought that was an interesting coincidence; I have thousands of songs in my music collection and Remmy Ongala "gets on my stage" with Karola just when I am reading an article in which Carola makes a comment.

I clicked the link to the comment by Carola, hoping that it was the Carola (Carola Kinasha) who inspired Remmy Ongala to compose his Karola. But I guess it was expecting too much coincidences in one day.