Absolutely you have to check Ayaka's History 2006-2009. that was best selling female album in 2009. Mikazuki is one of best song in Japan. you will obviously love that song.
http://www.filestube.com/e948d5e120b...2006-2009.html
the second album I recommend is SPEEDLAND : The Premium BEST Re Track
SPEED is best selling girlgroup in Japan and Asia. with only 3 years and 8 months career, they already sold over 20 million copies in Japan alone. they re-recorded most of their best song with more mature voice because when they record the original song, they are about 12-17 years old.
http://www.filestube.com/ebf338341bb...009-08-05.html