Templates for rendering lists of pieces and recordings were splitted in a more logical way:
* recordings.htm - root template for rendering the list of recordings grouped by pieces
* piece_header.htm - header for a piece which displays its title, poetry and music details
* piece_recording.htm - displays recording details for a given recording
* piece_people.htm - displays a list of related people and unknown names, included from piece_header.htm (to show poets and composers)
  and from piece_recording.htm (to show performers)
* recordings_piece.htm now obsolete and removed