All-Points Bulletin: Name These Tunes

Yes, I do love my million-calorie breakfasts from time to time. 😋

Anyways, almost two months ago, I put up an APB for some songs via a request from Misha who had wanted to see if they could be identified. Well, we've got some more puzzles from him to solve.

1) http://youtu.be/PpzSzRFfOuw
2) http://youtu.be/4Bxa3TeRrHU
3) http://youtu.be/hNpxqFGNG0o
4) http://youtu.be/Wc0Av0otWeU
5) http://youtu.be/O5lbD9MhvVw
6) http://youtu.be/4Xa3OuSfyWQ

No. 2 was a tune that I could get right off the bat since it's been covered on "Kayo Kyoku Plus". It's "Tomodachi ni Narou"（友達になろう）by the band microstar. Meanwhile, No. 3 couldn't be identified although the singer sounds a lot like Yoshinori Monta（もんたよしのり）, and I'm wondering if the song is a trackmate for "Aisarenai Show Time"（愛されないShow Time）from his 1987 album "Bitter". No. 6 is a wild guess, but could it be PAZZ singer Masayuki Iwata（岩田雅之）?

The rest of them have registered total blanks for me but perhaps some of you out there may be able to pinpoint them down.