Musically

['mjʊzɪkli]

(adv.) in a musical manner; 'She sang very musically'.

Checker: Virgil--From WordNet

(adv.) In a musical manner.

Checker: Mollie

You look brightly, move buoyantly, speak musically. Charlotte Bronte. Shirley.
I presume such ditties are written for musically-inclined Girton girls. Fergus Hume. The Island of Fantasy.

Checker: Mollie