Ah... The cross-class system where a ranged Bard had to level melee skills. Because nothing said "ranged" like sort-of mandatory lancer and pugilist skills one obtained by leveling 3 classes.

Archer to 15 for: Unlocking other classes.
Lancer to 2 for: Feint
Archer to 30 for: BRD Requirement.
Pugilist to 15 for: BRD Requirement, Internal Release.
BRD to 50 for: Maximum level.
Lancer to 34 for: Blood for Blood
Pugilist to 42 for: Mantra (All Cross-class skills obtained)

[Source: https://ffxivguild.com/ffxiv-bard-br...-skills-guide]