Depending on the form of the wedding.
Reflect the groom's inner activities of happiness, excitement, tension and expectation on the way to marry the bride.
If it's a Chinese wedding
The folk music played by suona is the most pertinent.
But it can't reflect too complicated psychological changes.
Because the Chinese wedding set the tone for the whole ceremony.
If it's a western-style wedding
According to the above.
Easier to find.