good ayu songs to start out with?

[Kei Rei]

so i've been talking to this guy in one of my classes. we got onto the subject of music, and he said something about going to clubs.

him: yeah, so this one club i go to has a j-pop night every once in a while. the other night, they were playing this singer named amumi hasagaki or something...?

me:

him: have you heard of her?

i told him i'd burn a CD of some of her songs to introduce him, and that he'd probably really like her. he's heard random remixes, but the only name he remembers is fly high. so i wanted your opinions on what ayu songs are good to play for someone who's never heard her before. i was thinking of a mix of really famous songs like M, SURREAL, fly high, etc., but i also wanted some lesser-known songs like HAPPY ENDING, And Then, ever free, etc.

opinions?