A man with a strange voice, acoustic rock background:
“I feel - so - good- I’m gonna break somebody’s heart to-ni-ight”
It won’t go away. I don’t know who it is. 
In German, they refer to this as “Ohrwurm” – ear worm!
Richard Thompson “I Feel So Good” off of his album Rumour and Sigh.
YES!
Thank you for coming to the rescue!
…he says as he quietly slips back to the land of the musically ignorant…