PLEASE HELP When might word-of-mouth advertising be most useful and why?

Appealing to your audience. It's like all marketing strategies, the word of mouth works best when it puts its audience first.

Explanation:

explanation:

may i ask what challenges?

answer: musical connotation

leonard b. meyer (1918-2007) was an american composer, author and philosopher. his work emotion and meaning in music is perhaps the first major treatise on music. it is a philosophical and psychological work, greatly influenced by koffka (one of the major proponents of gestalt psychology). his work deals with the problem of musical meaning and musical communication.