calm

casual

every day

cheerful happy

cool

hypnotic

light

meditative

mellow

reflective

relaxed

repetitive

romantic

serene

smooth

soft

soothing

dreamy

easy

ethereal

quiet

poignant

peaceful

tranquil

electric guitar

drums

drum machine

synthesiser

bass guitar

laid back

chill

medium tempo

cello

bass

soothe

drum

lay back