成立于1998年的地底乐团，缓慢地踏入20年。 　　率先发表由马来西亚音乐人Ziyan Tung创作的《Prelude》，用上木结他清新简约的曲风，为地底乐团20周年一系列的主题音乐创作掀起了序幕。 　　Founded in 1998, the Underground slowly entered 20 years. 　　The first to publish "Prelude" by Malaysian musician Ziyan Tung, using the fresh and simple style of Acoustic Guitar, set off a series of theme music creation for the 20th anniversary of the Underground.