A fine Scandinavian piano, a polyphone machine with disks, and a pianola were all used for dancing or recitals in the ballroom.
A thawm was used for dancing in the ballroom as well.
mnli hypothesis: A thawm was used for dancing in the ballroom as well. premise: A fine Scandinavian piano, a polyphone machine with disks, and a pianola were all used for dancing or recitals in the ballroom.