It's clear 2013 was a great year to be an investor. The market saw big gains across the board, with the Dow Jones hitting all-time highs throughout November, closing above 16,000 for the first time ever. Several stocks posted outstanding gains -- and Pandora (P) was among them.

Motley Fool analyst David Meier sees 2013 as a banner year for Pandora, which has strengthened its operations and bolstered its balance sheet with a secondary offering. Even the debut of Apple's iTunes Radio ultimately turned out to be less of a competitive threat than investors had feared. User numbers dropped slightly when iTunes Radio launched in September, but have since recovered nicely.

David expects Pandora to see significant revenue growth and increased scale in 2014 -- something all Pandora investors would celebrate.