Once heard someone not from North America remarking about popular music all sounding the same. I can appreciate that. At music school they spoke about the differences between Indian Ragas and I couldn’t follow what they meant. Now as I walk into busy Future Bakery, barely hear 3 notes of a song over the Saturday night crowd, instantly tell it is Stevie Wonder’s harmonica and a second later I realize it is Boogie On Reggae Woman even though most other musical elements are obliterated by the people eating, drinking and flirting. Never ceases to amaze me how few combinations there are of 3 or 4 notes and yet many of us recognize it is the instant we hear it.