If you want to play the song 'When Irish Eyes are Smiling' on Ukulele you should play the song at 3/4 time with a waltz feel. The strumming pattern you want to use is Down Down Up Down Up. First you start by playing a C chord, then switch to G7 and back to c. Now, start the next line of the song with G7 and then go to C and A7, D7 and end in G7. Play C over, to G7, C, C7 and F. Then go to D7, then G, then to D7 and end it G-G7. When you start the chorus you then play C, G7 and C-C7. Now play F and then C and repeat these two. Now play A7, D7 and G-G7. Reap this chorus for a second time.This is the chord progression you will use throughout the entire song! Now you can easily play 'When Irish Eyes are Smiling' on the ukulele.