I liked to play the harmonica

When I was still a boy, I liked to play the harmonica. It was quite easy to play any song I fancied with it. All I needed to do was to slide by lips to the left and to the right to produce the music. By trial and error I was able to play the songs I was familiar with. This musical instrument needs blowing and sucking air as our lips move from one tiny compartment to the next.

If you give me one harmonica now, I suppose I can still produce the songs that I know.