Sing
air
An air,
Melody
Air, or Lay. not like, air you breathe, or lay down. its different words. both are synonyms for Tune.
bass
air
aloud
Melody means a harmonious tune, music
Tune is a four letter word for melody. Other words include song and hymn.
An air,
Air
You are probably going for the word vague.
Tune? Melody? Jam?
Loquo is the Latin root that means voice Eg: Loquacity
Variety and arietta (a short elaborate melody for a single voice) are 7 letter five-syllable words. Another word is exuviae (the molted covering of an animal).
Melody
melody or harmony...maybe