Waulking songs () are Scottish folk songs, traditionally sung in the Gaelic language by women while fulling (waulking) cloth. This practice involved a group of women, who traditionally prepared cloth, rhythmically beating newly woven tweed or tartan cloth against a table or similar surface to lightly felt it and shrink it to better repel water. Simple, beat-driven songs were used to accompany the work. A waulking session often begins with slow-paced songs, with the tempo increasing as the cloth becomes softer. As the singers work the cloth, they gradually shift it to the left so as to work it thoroughly. A tradition holds that moving the cloth anticlockwise is unlucky. Typically one person sings the verse, while the others join in the chorus. As with many folk music forms, the lyrics of waulking songs are not always strictly adhered to. Singers might add or leave out verses depending on the particular length and size of tweed being waulked. Verses from one song might appear in another, and at times the lead singer might improvise to include events or people known locally. The chorus to many waulking songs consists of vocables, in which some of the words are meaningless, while others are regular Gaelic words (such as trom), but sometimes have no meaning in the context of the song. The vocables serve a function similar to 'tra la la' or 'hey hey hey' in other song forms. Some waulking songs have a strict verse-and-chorus structure. In other songs, the vocables are sung at the end of each line of a verse. In a song like 'S Fliuch an Oidhche ('Wet is the Night'), also known as Coisich a Rùin ('Come on, My Love'), the last two lines of one verse become the first two lines of the following one. A tradition holds that it is bad luck to repeat a song during a waulking session, which may explain in part both the many verses of some songs and the large number of songs. While fulling is a common practice across the world, it is only in Scotland that music became so strongly associated with it as to become an important cultural feature of the country. Waulking is rare in Scotland today, mostly confined to the Outer Hebrides, where it is carried out as a celebration of heritage. The last true waulking (for the purpose of making cloth) is believed to have