In parts of the west, music is more pervasive because it is played in churches, choirs, family gatherings, jazz jams,.. although may not be played at a technically high level, but it is truely enjoyed by many more average people.
The only way to promote music, any type, is to popularize it, classical music included. To do so, more should be played in normal settings e.g. in shopping malls, exits to MRT stations, parks etc.
Because of the nature of the settings, the chosen pieces should be light, not too taxing on the intellect and not too long (not a Mahler, definitely, which is better appreciated in a concert hall). Dance hall, chamber and solo music could be more appropriate, leaving big pieces that require a fuller ensemble to large spaces like the parks.
The objective should be to train the ear to appreciate the rich sounds coming from the different instruments at close quarters. Over time, the appreciation of the tones and the colours themselves will hold the attention of the audience instead of only the melody and the beat.