The most commonly tuned notes for a ukulele is G, C, E, and A, working from top string to bottom. Along with standard tuning, there are some other popular ukulele tunings that include: Baritone tuning (D, G, B, E), Slack-key tuning (G, C, E, G), English tuning (A, D, F#, B), Canadian tuning (low A, D, F#, B). You can experiment with these to find a sound that you like and are comfortable playing. Be aware, in most cases; you will need to use the right strings for each tuning as they will vary in thickness.