Chrono Trigger - Battle with Magus, Frog's theme, Robo's theme, Corridors of Time, Singing Mountain, To Faraway Times, Sealed Door, and Memories of Green.

Chrono Cross - Chronomantique, Radical Dreamers, The Girl Who Stole the Star, Radical Dreamers - Wind, Stars, and Fire.

Xenogears - Faraway Promise, Light From the Netherworld, Lost... Broken Shards, Shattering Egg of Dreams, Ship of Regret and Sleep, Singing of the Gentle Breeze, Stars of Tears, The First and the Last, Bonds of Sea and Flame, The One Who is Torn Apart, The Treasure Within, Ave, The Ancient Dance, Gathering Stars in the Night Sky, and Daijiru: City of Burning Sands.

I would probably have more Chrono Cross tracks but I don't own the soundtrack nor have I played it recently. I do remember the soundtrack being incredible though...