i think you should just wait for the Ultra Blue album. you could always download them all, but Ultra Blue is an album so it would be more nice to know you have 'a' copy of her album. in the other hand, the both Passion and Be my last are great songs, the pvs are great. but, i dont know. its really up to you, i would just wait for the Ultra Bluie album casue Hikaru never lets me down withe her songs! theyll be better than the last.