Love me do. (Beatles)
Before trying this, listen to a recording of the song. Ask Alexa to play Love Me Do by The Beatles.
See that little green note near the end. To get that note, you have to play a bend. Bending notes is what gives the harmonica it's harmonica sound. To create that note you have to change the shape of your mouth and lower your tongue. Try a search on Youtbe on how to bend notes on a harmonica.