Learn the SM blend sound with this catchy song. Watch as the letter S and M come together to make the blended sound sm. Sing along to the SM blend words in this fun educational video. A blend is a combination of letters where each letter makes its own sound. The sounds of the letters are blended together. Learners enjoy singing along and watching the interaction of two words with the SM blend sound. Don't forget to subscribe for more phonics songs like this one.