In 2005, she represented the Netherlands in the 50th edition of the Eurovision Song Contest, and in 2018 she appeared on the 13th season of America's Got Talent and made it to the finals.

[4] She was discovered in 1994, at the age of 15, after she won the Dutch TV talent show called Soundmixshow, where she performed the Whitney Houston song "One Moment in Time".

[5] In 2005, Glennis Grace accepted the offer to participate in the Nationaal Songfestival, the national selection in the Netherlands for the Eurovision Song Contest 2005.

[8] Glennis Grace was set to perform during the Eurovision Song Contest 2020 in Rotterdam, Netherlands, as an interval act alongside DJ and music producer Afrojack.

[17][18] A day later in a separate final broadcast Glennis Grace performed the song "Meant To Be" with American singer Bebe Rexha.

[19][20] In July 2021, it was announced that Glennis Grace would replace Jan Smit as a Coach on the twelfth series of The Voice of Holland.

After two audition episodes aired, the series was suspended indefinitely, due to sexual misconduct claims by (former) participants, allegedly going on for years, and aimed at the show's band leader, but also implying lax behavior of some (ex-)coaches.

She was shown on security camera giving a push or slap with an open hand to the manager who she thought had asked her son to leave the supermarket.

The victims claimed in February she had caused no pain or harm, in April and October they wanted to change that statement, but the judges didn't allow that.

A week before the trial, she broke the silence, after the prosecution had confirmed to the media they had added Threat to the charges, without mentioning they were going to ask for acquittal.