Battle Symphony

By performing an intense musical ballad, you are able to enhance the abilities of nearby allies. When you cast this spell, choose any number of creatures within 30 feet of you. Those  affected by this spell gain one of the following features (your choice):

• Waltz of the Wind: Your song energizes affected creatures, increasing their movement by 10 ft.
• Ballad of the Bulwark: By bolstering the courage of those who hear it, the music grants them a +1 to AC
• Dance of the Duelist: As the music sharpens the focus of your allies, they gain a +1 to attack rolls (stacks with other bonuses; max of +3)

Creatures who are deaf or cannot hear for other reasons cannot benefit from these effects. During each of your turns while concentrating on this spell, you must use your bonus action to maintain the song's effect. If you do not use your bonus action to do this, the spell is lost. You may change the bonus applied when using your bonus action to maintain the spell each turn.

At Higher Levels. For every two spell slots higher than 3rd level (max 7th) you cast this spell, your movement bonus increases by 5 feet, while the AC and attack roll bonuses increase by 1.