The Music of a Train Station

Melbourne has a fully functioning public transport system which is comprised of trains, trams, and buses, which you gets one back and forth in very reasonable time frames. This is something I've never before experienced.

Have you ever sat in a big train station and closed your eyes and listened? There is a big rather pretty station down in Melbourne called Southern Cross, and it makes the most lovely music, what with the trains and the people and so forth.