However, it is often noted that "New-age music" is a mere popular designation which successfully sells records. J. Gordon Melton argued it does not refer to a specific genre of music, but to music which is used in therapeutic or other new-age purposes. Kay Gardner considered that the label "New Age" is considered an inauthentic commercial intention of the so-called new-age music. She commented that "a lot of New Age music is schlock" and how due to records sales everyone with a home studio put in some sounds of crickets, oceans, or rivers, as a guarantee of sales. What started as ambient mood music related with New Age activity, became a term for a musical conglomeration of jazz, folk, rock, ethnic, classical, and electronic, among other music styles, with the former and markedly different musical and theoretical movement.