The term "instrumental music" or "contemporary instrumental" can include artists that do not use electronic instruments in their music, such as solo pianist David Lanz. Similarly, pianists such as Yanni and Bradley Joseph both use this term as well, although they use keyboards to incorporate layered orchestral textures into their compositions. Yanni has distinguished the music genre from the spiritual movement bearing the same name. The term "contemporary instrumental music" was also suggested by Andreas Vollenweider, while "adult alternative" by Gary L. Chappell, which was the term by which "Billboard" called the new-age and world-music album charts.