In 1979, Marcha joined forces with former Teach-In (band) singer Marianne Wolsink to form the duo Tulip.

Known as Marga Bult during this time, she recorded two albums and 14 singles with Babe, and toured extensively across Europe and Asia, before the group disbanded in June 1986.

In 1987, as a solo artist, Marcha was chosen by broadcaster NOS to be the Dutch singer for that year's Eurovision Song Contest, and in a selection of six songs, "Rechtop in de wind" ("Upright in the Wind") was chosen by regional juries as the country's entry.

[1] At the 1987 Eurovision, held on 9 May in Brussels, "Rechtop in de wind" finished in joint fifth place of 22 entries.

In 1996, Marga announced the scores of the Dutch jury at the Eurovision Song Contest staged in Oslo, Norway.