Warrant Pays Tribute To the Late Jani Lane

8/13/2011 1:00 PM PDT

Warrant Pays Tribute to the Late Jani Lane

Warrant dedicated their concert in North Dakota last night to Jani Lane -- punctuated by a performance of their classic song "Heaven" ... which was written by Lane and was actually their most commercially successful single.

Lane passed away on Thursday at the age of 47.