| Herz | 
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| Released | 22 March 2004 | 
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| Recorded | January – December 2003 | 
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| Studio | Home Studio (Hamburg, Germany) | 
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| Genre | Pop, rock | 
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| Length | 47:52 | 
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| Language | German | 
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| Label | Island (Universal) | 
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| Producer | Ulf Leo Sommer, Peter Plate | 
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- "Liebe ist alles"
 Released: 1 March 2004 
- "Ich will mich verlieben"
 Released: 14 June 2004 
- "Willkommen"
 Released: 13 September 2004 
- "Ich komm an dir nicht weiter"
 Released: 22 November 2004  
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Herz (Heart) is the ninth studio album by German pop duo Rosenstolz, containing songs representing the different sides of love. Released in 2004 by Island Records, the album reached triple platinum status in Germany. It also yielded four top 20 hits in the German singles chart.