Learn Icelandic: Það er mikið sungið á hefðbundnu þorrablóti. - People sing a lot at a traditional midwinter feast.

In Icelandic, you can use Það + the verb vera + a past participle to describe a general action where the "doer" isn't important or known. It literally translates to "It is much sung," but naturally means "People sing a lot" or "There is a lot of singing." This is a very common way to describe general traditions or events!

Why is the past participle sungið in the neuter singular form?

In an impersonal passive sentence, the grammatical subject is the dummy pronoun Það. Because Það is inherently neuter and singular, the past participle must agree with it. That is why we use the neuter singular form sungið instead of masculine or feminine forms like sunginn or sungin.

Why does the adjective hefðbundnu end in -u here?

It is in the dative case to match the neuter noun þorrablóti. The preposition á takes the dative here because it describes location or attending an event, rather than moving toward it. Since there is no definite article like "the" before the adjective, we use the strong declension. The strong dative neuter singular form of hefðbundinn is hefðbundnu.

Could I put the word mikið at the end of the sentence instead?