the teen sensations

[jazzboCR]

OK I'm cheating big-time here: http://www.ranker.com/list/teen-pop-band.../reference << This being a list for moderns, you'll understand I haven't heard of half these folks.
Now O65's nominations:
https://www.youtube.com/watch?v=2sAHiR0rkJg I like this one too: https://www.youtube.com/watch?v=E9PNVUpI19A
https://www.youtube.com/watch?v=pwM0q9gmhtg and https://www.youtube.com/watch?v=UKf3oDOV5T4
https://www.youtube.com/watch?v=yrotsEzgEpg
https://www.youtube.com/watch?v=C4VCUbL7jsc and https://www.youtube.com/watch?v=o8HkEprSaAs
https://www.youtube.com/watch?v=7flrKMGfwjw

Here's 1 candidate (and what career they've had!). Boyz II Men: https://www.youtube.com/watch?v=wuC_cd5xAtY and https://www.youtube.com/watch?v=jSUSFow70no
Here's another--New Edition: https://www.youtube.com/watch?v=7jbtwQgqH5U and https://www.youtube.com/watch?v=1PZHG4_bKxA

It slays me that I can't include some groups--age issues. Frankie Valli was 28 when that first hit was recorded. Screw it, here it is anyway:
https://www.youtube.com/watch?v=08ziDo8Luws