1988
MERCIFUL WATERS by Jan Bang. Morten Harket on backing vocals.
Released as a single (7") and included on the Jan Bang album "Frozen Feelings". (CD)


1989
DET ER ENNÅ TID by Bjørn Eidsvåg. Morten Harket along with Oslo Gospel Choir on vocal. Released as a promo single and included on the compilation cassette "Speiderkassetten 1989".





1991
WHERE YOU ARE by Silje Nergaard. Morten Harket in duet with Silje. Included on the Silje Nergaard album "Silje". (LP and CD)



1992
KAMILLA OG SEBASTIAN by Ragnar Bjerkreim. Morten Harket on vocal. Included on the sountrack album "Kamilla og Tyven" for the film with the same title. (CD)


1993
CAN'T TAKE MY EYES OFF YOU. Morten on vocal. Included on the sountrack album "Coneheads' for the film with the same title. (CD and cassette)



1994
MILLIMETER by Anne Grete Preus. Morten on backing vocal. Included on the Anne Grete Preus album "Millimeter". (CD)



1995
HYMNE TIL KJÆRLEIKEN and SANCTUS by Ragnar Bjerkreim. Morten Harket sings one verse on each song. Included on the Ragnar Bjerkreim album "Missa Caritatis" (CD)

1995
HYMNE TIL KJÆRLEIKEN as well released on the CD "Salig blanding" given away for free by the Norwegian Christian magazine "Treff".



1995
EVIG UNG a Norwegian version of Bob Dylans "Forever Young". Morten Harket on vocal. Included on the Lekekameratene compilation album "Kom ut og lek!" (CD and cassette)


1995
WHERE YOU ARE by Silje Nergaard. Morten harket in duet with Silje. Included on a compilation CD with Norwegian duets "It Takes 2".



1996
A KIND OF CHRISTMAS CARD by Morten Harket. Included on an anniversary compilation CD for the Norwegian Spellemann Awards.





1996
NEVER HEAR THAT LAUGH by Jørun Bøgeberg (former bassist for a-ha). Morten Harket on backing vocal. Included on the Jørun Bøgeberg album "Songs from the Pocket" (CD). As well released as a ltd ed (200 numbered copies) signed by Jørun Bøgeberg and Magne Furuholmen among others. Cover designed by Magne Furuholmen, printed on real canvas.

1997
KRÅKEVISA. Morten Harket on vocal. Included on the album "Kvirre Virre Vitt!" - a collection of children songs sung by different Norwegian artists. (CD)


1998
A JESTER IN OUR TOWN by Gaute Storaas. Morten Harket on vocal. Included on the album "Songs from Sophie's World The Musical" . (CD)



1999
JUNGLE OF BELIEFS by Ragnar Bjerkreim. Morten Harket on vocal. Included on the Swedish album "Cultures Spans the World". (CD)



2000
HAN ER MIN SANG OG MIN GLEDE based on the Beatles song "There Goes my Everything". Morten Harket in duet with Anne Marie Almedal. Included on the Salvation Army album "Perleporten". (CD)


2001
JUNGLE OF BELIEFS and KAMILLA OG SEBASTIAN by Ragnar Bjerkreim. Morten Harket on vocal. Included on the Ragnar Bjerkreim compilation album "Musikalske Fasetter". (CD)


2001
MITT HJERTE ALLTID VANKER. Morten Harket on vocal along with the Norwegian choir Sølvguttene. Included on the album "Sølvguttene synger julen inn". (CD)


2002
PIYA by Junoon. Morten Harket in duet with Ali Azmat. Included on the Junoon album "Daur-e-Junoon" The song was recorded at Oslo Spektrum September 9. 2001 during a Junoon concert with Morten Harket as a guest singer. (CD)

1994/2001
ME SLÅR FRAMFOR OSS KROSSEN DIN produced and arranged by Kjetil Bjerkestrand. Morten Harket on vocal. Included on the album "Nå lukker seg mitt øye" with Norwegian evening prayers for children. (CD and cassette).