hmmm.. I sing a lot of their songs but the ones I always like to sing are S.L. Magic and SAKURA Goodbye.. S.L. Magic when I'm happy and SAKURA Goodbye when I feel melancholic or nostalgic.. (I don't even memorize all of the lyrics since my brain just can't register Japanese.. )

i like singing Sayonara My Friend. but lately i often singing Switch and Shoujo M.
when singing Switch i can imagine the clean music of that song. .happy.

I usually sing Pride, Switch and Haruka. I got addicted on singing it XD

Sometimes I try Hi-Hi-Hi, but that always kinda fails, but my favorite ss SAKURAグッバイ, no idea why xDD

i like to sing taiyou to kimi ga egaku story and shunkan dunno why?? and sometimes i hum pride...

I usually sing Haruka, Shoujo S, Koi Moyou, Hoshi No Furu Yoru Ni, Space Ranger and CUTE! *-* <3

I'm not exactly sure why, but I find myself singing EVERYBODY SAY YEAH! a lot. I guess I must really like that song so much. It gives off quite an energetic vibe. And the chorus is probably the easiest to sing along to: "EVERYBODY SAY YEAH! EVERYBODY SAY YEAH! Na-na-na-na-na, na-na-na-na-na (when at a loss for the actual lyrics)" :)) Thankfully I've "mastered" the words to the song after listening to it a bunch of times, and so now I don't have to worry about giving the song "justice" every time I do my own rendition. :P

I also sing CUTE! and TaiKimi every now and then. They have such catchy melodies. :D

From couple of months I keep singing Pride. I also sing Shunkan sentimental and Shoujo S a lot because I know the lyrics.

Shunkan Sentimental. Koshi-Tantan too. "Come on, baby." .cool.

TaiKimi , Pride, Haruka , Doll and Namida no Regret...

I Always Sing SHOUJO M!..haha! because MAMI sings it..haha! YEAH!..

Emotion...for some strange reason. I don't even really like the song, but the melody is stuck in my head

thanks for all the awesome replies minna~..
btw,..for some strange reason,..i couldn't stop myself from singing Shining Sun and Switch these days~..........

Lately I've been singing Aitai, Shunkan Sentimental, Haruka, and SCANDAL Baby.

SCANDAL song that i usually sing is Shoujo s, Shunkan Sentimental, DOLL, S.L.Magic, Pride,

S.L. Magic for me. its such a simple and catchy song and yea i also like the lyrics. And then also Scandal Baby.

koshi tantan, Doll, and taiyou .happy.

i always sing Shunkan Sentimental,BEAUTenn,Shoujo S
a always sing it when i ride my motorcycle,or when i feel lonely,playing games,sports.
i don't know why i always sing that song,i just like it

i always sing switch and kimi to yoru to namida.. that's my favorite song and the lyrics aren't hard to memorize.

Shunkan Sentimental and Secret Base for me

Shunkan Sentimental and Namida no Regret!!! .happy.

The song I sing most is most definately Aitai. I just think it's so catchy!
Besides that Kimi to Yoru to Namida and Namida no Regret

lately, I've been into haruka, secret base and love survive
'nande nande nande nande~' lol .happy.

i always sing aitai. i really like that song. that's one of my favorites.

I usually sing SCANDAL BABY, even though I dont really care if my lyrics are wrong