He became recognized as a solo artist after lending his vocals to the songs `` Nothin ' on You '' by B.o.B , and `` Billionaire '' by Travie McCoy , which were worldwide successes , and for which he co-wrote the hooks .
He became recognized as a solo artist after lending his vocals and co-writing the hooks for the songs `` Nothin ' on You '' by B.o.B , and `` Billionaire '' by Travie McCoy .