My first Ys title was Wanderer's from Ys III on the SNES. The gameplay was easy to pick up but I was hooked with the music! What was great is I was actually introduced to music from Ys Book 1, namely the Field and Palace of Destruction music back in my AOL days (DATED). I fell in love with those tracks even though I had no idea where they were from (the fool who recorded them never named the files!!!).
I managed to get a Turbo Duo and import it from Japan and went on a small shopping spree which included Ys. Needless to say I was hooked from there and I try my hardest to buy a game when it, and the funds, are available. I'll forever support Ys as I do with Phantasy Star (that's not a card game, but that's another story
).