Singles (4)
Zing, signorita, zing (2002)
backing vocals op alle tracks.
Oh mama (2001)
backing vocals op alle tracks.
Mathilde (1999)
backing vocals op alle tracks.
Feest in Vlaanderen met Eddy Wally (1999)
backing vocals op alle tracks.
Overzicht releases van Eddy Wally waaraan Harriët Willems meewerkte
Singles (4)
Zing, signorita, zing (2002)
backing vocals op alle tracks.
Oh mama (2001)
backing vocals op alle tracks.
Mathilde (1999)
backing vocals op alle tracks.
Feest in Vlaanderen met Eddy Wally (1999)
backing vocals op alle tracks.
Best-of's (8)
Eddy 80 - het allerbeste van (2012)
backing vocals op 3 van de 45 tracks.
Alle 40 Goed (2011)
backing vocals op 2 van de 40 tracks.
Zijn allergrootste hits (2010)
backing vocals op 2 van de 28 tracks.
Goud van hier (2009)
backing vocals op 1 van de 12 tracks.
Het beste van Eddy Wally (nr. 1) (2008)
backing vocals op 2 van de 14 tracks.
Het beste van Eddy Wally (2CD Box) (2006)
backing vocals op 2 van de 28 tracks.
Wally's Wondere Wereld (50 jaar hits) (2004)
backing vocals op 2 van de 22 tracks.
50 Jaar hits (2002)
backing vocals op 2 van de 23 tracks.
Compilaties
Mathilde op Het best uit tien om te zien (2000) CD, 2000