Busking to Protect from Death

You play a tune with your instrument that emits a faint green aura around a target creature that can hear you. All material components used are consumed. Target creatures cannot be protected from death if they cannot understand you, die of old age, or have been temporarily resurrected. 

As an action, you consume 1gp (this need only to be on your person and does not need to be touched). Target creature of your choice that can hear you becomes protected from death for the duration of the spell. If the target creature takes damage that would reduce its health to 0, it instead remains at 1, and cannot be reduced below 1 for a further 6 seconds, after which the spell ends.

Once per day, until the next dawn, you can cast this spell as a ritual, whereby the tune is played for 10 minutes. Any number of creatures can receive the effect of this spell so long as they knowingly pay tribute themselves of 1gp for every hour they wish to gain protection, up to a maximum of 10 hours from end of the ritual. If the target creature takes damage that would reduce its health to 0, it instead remains at 1, and cannot be reduced below 1 for a further 6 seconds. For the duration of this ritual, a dim green light is emitted 100ft directly into the air unless it hits any surface more than 1 inch thick.