Rock music | country music | rock music | pop music | single (music) | 2004 in music | Heavy metal music | folk music | 2005 in music | 2006 in music | Hip hop music | 2003 in music | 1998 in music | 2001 in music | 1999 in music | music | 2000 in music | Single (music) | 2002 in music | 1997 in music | Pop music | electronic music | classical music | 1995 in music | 1991 in music | Eastman School of Music | 1996 in music | The Sound of Music | hip hop music | 1990 in music |
Helen works with private collectors to research and authenticate pieces in their collections, she has consulted for Christie's and Phillips auction houses and works closely with museums and institutions such as the Victoria and Albert Museum, London; the Rock and Roll Hall Of Fame, Cleveland and the Experience Music Project, Seattle.