Words to Describe croon

How croon often is described ("________ croon")

• cool
• sleepy
• sultry
• simple
• gentle
• mournful
• mother
• folk
• lazy
• cold
• harsh
• rhythmic
• sweet
• monotonous
• lamented
• mild
• loud
• little
• half
• eerie
• quiet
• hoarse
• childish
• plaintive
• low
• smooth
• eldritch
• barbaric
• eternal
• lonely
• long
• wordless
• weird
• happy
• melancholious
• drowsy
• soothing
• mellow
• strange
• soft