Conversation so far:
What happened in 1998?
In 1998, Tinariwen came to the attention of the French world music ensemble Lo'Jo and their manager Philippe Brix.
how did it come to his attention?
That group traveled to a music festival in Bamako and met two members of the Tinariwen collective.

Question: What happened after that?
Self-contained rewrite: What happened after the group traveled to a music festival in Bamako and met two members of the Tinariwen collective?