This is a very very very goooooooood video!!
The Persistence of Memory is used as the topic of a SOUND ART~!!
Although it's only a picture, but it really stimulates my emotion of fear! GooooooooD~!!!
[Source: Salvador Dalí - La persistencia de la memoria - Sound art by andanzza]

The Persistence of Memory
Salvador Dalí, 1931
oil on canvas
24 × 33 cm, 9.4 × 13 in
Museum of Modern Art, New York City

1. The clock could hang on a tree which is growing on a table, he bring us to explore the "time" in his subconscious.

2. This clock is hanging on the table, almost slips down from the table. If you see it detailly, there is a fly on the clock, it means the time "fly" away.

3. There is a group of ants covers the clock, it symbols that the time is eatten gradully, it gives us a sense of deterioration of life.

4. In the isolated desert, there is a lonely distort person, Salvador Dali himself is melting under the hot weather.

Refferences and further readings:
The Persistence of Memory,from Wikipedia, the free encyclopedia.
Salvador Dali Paintings, from ArtQuotes.net
陳彬彬, (2008), 從零開始圖解西洋名畫, 台灣:晨星出版有限公司