In 2003 she took part in recording Per Gessle's solo album 'Mazarin' as a backup singer. She also participated in Mazarin Sommarturne 2003 with Per Gessle and the band. A year later in 2004, Helena was invited to record Gyllene Tider's anniversary album 'Finn 5 Fel!'. She also participated in Gessle's 2006 solo album, Son of a Plumber, providing backup vocals and occasional leads.
- Sandy Mouche (spring 2003) - ep
- White Lucky Dragon (September 2004) - just in Sweden and Japan
- ...and poems for the unborn (January 2006) - so far in Sweden only
- Cherry pie (dir. Johan Tholsson)
- C'est pas juste (dir. Per and Ola Blomgren)
- Papillon (dir. Jeffry Rich)