Aa Ii na!

"Aa Ii na!" (あぁ いいな!) is the second single released by Japanese pop duo, W. It was the first original release by W, as all their previous songs had been covers. The single was released on August 4, 2004 under the Zetima label. This single was included in their second studio album 2nd W In the music video for "Aa Ii Na!", W are supported in dance scenes by Berryz Koubou who act as back-up dancers in both "Aa Ii na!" and their next single, "Robokiss". "Aa Ii na!" sold 26,398 copies in it's first week of sales and had a peak rank of #5. In total, the single sold 41,581 copies, making this single their highest selling single release. The title track was coupled with a song titled, "Otome no Keitaidenwa no Himitsu".

Tracklisting
thumb|220px|right|Aa Ii Na!

CD

 * 1) Aa Ii na! (あぁ いいな!) - 3:51
 * 2) Otome no Keitai Denwa no Himitsu (乙女の携帯電話の秘密) - 3:52
 * 3) Aa Ii na! (Instrumental) (あぁ いいな! (Instrumental)) - 3:48

Oricon ranks and sales

 * Total sales: 41,581