Casiotone for the Painfully Alone may be an unusual name for a band, but it makes sense: basically a solo project by Owen Ashworth, the band uses mostly battery powered keyboards and electronics recorded on a four track. The results on his first three albums were intimate, ethereal electronic pop songs. On the most recent disc, “Etiquette,” Ashworth decided to expand his sound to include guitars, strings, pianos and so on, especially on songs like…