One of Duncan Williamson's most impressive songs was "The Cruel Grave," a revenant ballad. It tells of the return, for just this one night, of a lover from beyond the grave to visit at the window of his former beloved, who has been lost in grief. The song is of the same type as "Willie's Lost at Sea" (Roud no. 22567; Greig-Duncan no. 338). Here Duncan sings it for an audience of half a dozen North Americans at a house in Auchtermuchty, Fife, rented by John Niles and his research team.
Williamson can also be heard singing "The Cruel Grave" on the CD accompanying Mike Yates, 'Traveller's Joy: Songs of English and Scottish Travellers and Gypsies 1965-2005' (London: English Folk Dance and Song Society, 2006), track 9. A transcription of this performance (which dates from 2001) is included at pp. 54-55.
Another recording of Williamson singing this song is on the Veteran Tapes cassette 'Put Another Log on the Fire: Songs and Tunes from A Scots Traveller' (Veteran Tapes VT128, 1994), side B, track 7, under the name "Willie's Lost at Sea."
Tobar an Dualchais includes recordings of Williamson singing this song (under the name "Willie's Lost at Sea") in 1978 and 1979, and again (under the name "The Cruel Grave") in 1987 (track ID 91097).
Another recording of Williamson singing this song, under the title "I Must Away," can be heard as track 5 of the album 'Old Songs and Bothy Ballads 4: Nick-Nack on the Waa', Springthyme Records CD ah 06 (2008).