Yodeling is a form of singing that involves rapidly changing between the chest voice and the head voice, creating a melodic sound. Singing falsetto is a technique used to produce a high-pitched sound by using only the thin edges of the vocal cords. Yodeling and singing falsetto are both techniques used to create a unique sound in singing. YODEL is the 5 letter solution to the crossword, and it is a combination of singing falsetto and yodeling.