Pandora on Tuesday announced changes to its Pandora One subscription plan, which charges users to listen without advertising. The company is keeping the same pricing for existing monthly subscribers, but new subscribers and annual subscribers have to pay more. Here is how the changes are broken down: Existing Pandora One monthly subscribers that remain active will not experience a price increase “at this time” and will continue to pay $3.99 per month. For new subscribers, the subscription price will change to $4.99 per month starting in May. Existing annual subscribers that remain active will migrate to a discounted loyalty price of $3.99 per month at their next renewal period. Pandora is ending the annual subscription option. The company plans to notify annual subscribers that are approaching their renewal date this week with the new pricing change.