Thank you guys for listening and commenting. Yes this is the most difficult melody I have ever tried to learn with harmonica (Well, I tried Kiss of Fire, but decided to take something a bit easier than that).
There are quite a lot of bends in Ipanema in 1st position: 2 hole whole step draw bend, 3,4 and 5 hole half step draw bends and 3 hole valved half step blow bend (using Powerbender/Paddy Richter tuning).
