Today Pandora reported its fourth-quarter financial performance, essentially matching revenue expectations, and beating on earnings per share. For the period, Pandora had non-GAAP revenue of $200.8 million, and non-GAAP earnings per share of $0.11. Investors had expected $0.08 in earnings per share and revenue of $201 million. Given those results, why is Pandora falling so heavily in after-hours trading?