Base Duration

Refers to the the base length of time a bard song lasts for. Keep in mind this duration will sometimes vary based on your bard level, and often enhancements:
 * Lingering song enhancements grant +20 % per tier, up to +80 %
 * Virtuoso prestige enhancement grants +10 % per tier, up to +20 %
 * Capstone enhancement grants +20 %