YolanDa welcomes Scottish string duo the Ayoub Sisters. They are two sisters who each play a different string instrument, the cello and violin. They show off how the instruments look similar but sound different, and can do different things. \n\nThe Fact Jam goes on to explore other members of the string family, including the largest violin in the world that is as tall as a bus and the smallest violin that is only as big as a bumblebee. \n\nA short film finds two music-loving children learning how to write a song using a loop pedal, with help from beatboxer Faz Shah.