When people say lalala does it mean there singing?

The "lalala" sound is generally associated with singing or humming a melody without using specific lyrics. When someone says "lalala," they are usually creating a placeholder for actual words or simply producing nonsensical sounds while vocalizing a tune. In the context of music, "lalala" often serves as a way to convey a rhythm or a catchy vocal hook. It can be incorporated into songs to fill in parts where the actual lyrics have not yet been written or improvised, or it can simply be used as a vocal embellishment, especially in popular or folk music. In other forms of art, literature, or entertainment, using "lalala" can create certain emotional tones or humorous effects depending on the speaker's context and intent. Additionally, "lalala" is sometimes employed playfully to represent speech or humming when singing along to familiar lyrics that are implied but not explicitly stated.