Living in the shadow of Covid-19, we are advised to constantly wash our hands to prevent the spread of disease. According to the World Health Organization (WHO), it is best to wash them for at least 20 seconds, or the time it takes to sing Happy Birthday twice.
If you want something different (say, a tune with seven flute players), the Malaysian Philharmonic Orchestra has the thing for you. It recently created a whimsical hand-washing tutorial video set to the music of Come Follow, a tune by British composer John Hilton.