College of Hellsong
When you choose this proficiency at 3rd level, you gain proficiency with medium armor, shields, and a martial weapon of your choice. You also gain proficiency with the bass guitar which can act as your spellcasting focus.
Also at 3rd level, you can unleash a wave of pure metal power. As an action, expend a use of your Bardic Inspiration, forcing hostile creatures within 15-feet to make a Charisma saving throw. On a failed save, creatures are marked with Thunderstruck until the beginning of your next turn.
The next attack that hits the target knocks the target prone, and deals additional thunder damage equal to the Bardic Inspiration die roll.
At 6th level, you protect your own, even when surrounded in chaos. Whenever an ally within 30-feet that you can see takes damage, you can use your reaction to transfer half of the total amount to yourself.
You can use Most Pit a number of times per day equal to your Charisma modifier, regaining all uses after a long rest.
Starting at 14th level, you gain immunity to the frightened condition. Whenever you would be reduced to 0 hit points by a hostile creature, you are reduced to 1 hit point instead. Once this happens, you can't gain this benefit again until you finish a long rest.
In addition, you learn the *infernal calling* spell, which counts as a bard spell but doesn't count against the number of bard spells you know.