Skald song durations

[jadewillow]

What is the duration of Skald feats like Terrifying Bellow. They don't seem to be in line with bard song durations (10 rounds). And do feats that lengthen bard songs (lingering song, lasting inspiration) also impact Skald "songs"?

Thanks

[Dorganath]

Skald songs with durations are 1 round/Character level

Lingering Song adds 5 rounds.