There are multiple artists called Heidi:

1) Heidi is a danish sing and songwriter, know form the Danish edition of X-Factor.

2) Heidi is Canadian born, Berlin based DJ and producer.

3) Heidi is a Japanese rock band.

4) Heidi Janku is a Czech pop singer.

5) Heidi is a UK based R'n'B singer.

6) Heidi is a Finnish pop singer.

7) Heidi was a Boston-LA rock band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.