Dani began his career with Rawhead Rexx, a band that he helped form but departed due to his new commitments to Helloween. He was also a touring drummer for Blaze Bayley from October 2004 to December 2005.
Regarding his role in Helloween when compared to his two predecessors, Ingo Schwichtenberg and Uli Kusch, Dani was quoted as saying: "I view my style as a symbiosis of Schwichtenberg and Kusch. I'm not as straightforward as Ingo but not as technical as Uli. I have my own style." 
In August 2008, Dani inked an endorsement deal with Paiste and states being extremely happy with his new cymbal setup, which features the new Signature Reflector Heavy Full Crash models. and describes them as being warm, full, and 'sounding straight as an arrow' with a silvery shimmer.