No, Playground Sessions does not accept multiple payment methods on single site orders.
Each order, whether it's a membership, keyboard bundle, family plan, gift code, or song arrangement, must be paid for in full, upfront, with one single payment method. For example, it's not possible to pay part of a fee with one card or PayPal account, and the remainder with another card or PayPal account.
However, if you place two or more separate orders (identified by unique site order numbers), you are more than welcome to switch your default payment method at any time.
If you have specific questions, feel free to reach out to the support team at firstname.lastname@example.org.