Debbie Boone in 1977 for the movie of the same name. http://en.wikipedia.org/wiki/You_Light_U... You Light Up My Life was a song written by Joseph Brooks and performed by Kasey Cisyk. Source(s): http://en.wikipedia.org/wiki/You_Light_U...
Brand Extension Definition: The Brand Extension is the marketing strategy wherein a new product is launched under the existing brand name. The category in which product is launched may be related or unrelated to the brandâs current category.
Line Extension. Line extension refers to the expansion of an existing product line. For instance, a soft drink manufacturer might introduce a Diet or Cherry variety to its cola line, while a toy manufacturer might introduce new characters or accessories in its line of action figures.ine Extension. Line extension refers to the expansion of an existing product line. For instance, a soft drink manufacturer might introduce a Diet or Cherry variety to its cola line, while a toy manufacturer might introduce new characters or accessories in its line of action figures.