Hm........It seems interesting. I have to say from where I come from, there is no songs written by local singers to sing about SMRT. Plus the recent fiascos happened from this troubled public transportation company have not compelled songs writers to write songs about MRT.
From the below link, this Youtuber listed 7 songs from Hong Kong singers about MTR:
You may heard Joey Yeung sung the song in Mandarin and maybe like me will be surprised that this song is actually about MTR. Hehe.
Ok, enjoy the music videos and have a great week ahead.