Perhaps more significantly, one of the bard's trademark abilities—that of bardic music—was both strengthened and tied more closely to the bard class. In the previous 3rd edition, the bardic music abilities available to a character depended only on the amount of Perform skill that character possessed, not advancement in the bard class. These abilities largely did not improve, once acquired, and no new abilities became available at high levels; only the number of daily uses of the music increased with bard class level. In the 3.5 version, not only was the availability of bardic music abilities tied to bard class level as well as Perform skill, but also most of these abilities now significantly improved in potency with progression in the bard class. New high-level bardic music effects were introduced as well as progressive improvements of existing ones.