I'll link 3 of my absolute favorite trance songs
1. youtube.com/watch?v=UgpuzW1pKsc
Awesome build up, great mid section and ending. Some trance songs really lack in the build up, but this one is one of the better ones.
2. youtube.com/watch?v=JntCN93h5hk
My favorite trance song, also one of my favorite all time songs regardless of genre. Normally I don't like vocals in trance, but A New Day really has excellent vocal sections. I love what she is saying,
"As the dark melts by the first sunshine and the mist disappears,
as the night turns into day, you wake up and feel free.
A new day."
Also her vocals and the song in general has a really nice dreamy sound to it. I remember it being one of the first trance songs I heard and brings back a lot of nostalgia.
3. youtube.com/watch?v=Sj3vGDGfMHE
All time classic, really love the main section in this as well.
Also I know I said 3, but this last one is a must listen if you like trance. It's more recent being released in 2k13, but my God what a track. youtube.com/watch?v=hr44pa4P5cg