By Denny Dyroff, Entertainment Editor, The Times Ella Vos Many singer/songwriters have nice voices and can sing well but lyrically get mired in the same old topics – tales of love, stories about their somewhat mundane lives and observations of other people’s conditions. Ella Vos, who is bringing her “Watch and Wait Tour” to the Fillmore Philadelphia (1100 Canal Street, Philadelphia, 215-309-0150,...