As requested by I got the horses in the back, here's Mercury, the Winged Messenger with the Mother 3 soundfont.
Mercury is both the fastest and shortest movement of the suite, perhaps reflecting its role as the quick "winged messenger". As a piece of music, it seems to function as a scherzo of sorts in the suite, following a standard ternary form pattern.
The main section of the movement is, appropriately for the planet it's depicting, fleet-footed and unpredictable.
The Trio doesn't take too long to arrive (1:02) and it features a compelling, somewhat weighty melody.
After the Trio has died down, the main section returns (2:05) this time with many colorful additions and changes in orchestration.
The Timpani assertively begins the short coda (3:05), which combines elements from both the main section and the Trio. Before we know it and without any pomp or circumstance, the planet abruptly bids us goodbye.
The Planets, Op. 32
III. Mercury, the Winged Messenger