Conversation so far:
How old were the members of the boy band Menudo?
The members of Menudo were generally aged 12–16.
Did the band Menudo have any singles?
Menudo continued to work, releasing an English single titled Dancin', Movin', Shakin', and a follow-up in 1993, Cosmopolitan Girl.
Was one of the boy bands more successful than the others like Menudo?
New Kids on the Block, the first commercially successful modern boy band, formed in 1984 and found international success in 1988.

Question: What made them so sucessful
Self-contained rewrite: What made New Kids on the Block so successful?