What is happening in the commercial ?
A  young man is walking out of subway.and then he takes out his HTC and start to listen rock music with headphone. Suddenly,all the things around him like cars and street lights  start to blow up. However,when his phone ring up,the music stop temperately and the speed of blast slow down.After he hang out the phone,the music restart and the speed of blast come back to the normal speed.

What is the product?
HTC cell phone.

Who is the target audience?
According to the tone of this commercial, it is for teenager.Teenagers is the main group who use smartphone to listen to music.And rock music is their favorite.The main actor in the commercial is a young man who is cool and fashion.

What emotions does it use to persuade the reader to buy the product or service?
They use excitement music to bring out how well the resound beats is.Also, they give the audience a surprise that many things are exploding.At the and the slow motion part is quite humorous. 

Does it do a good job in persuading the watcher to buy the product? Why or why not?
Yes, the commercial is a shuck and it is easy to remember the specialties of the product--the resound beat.And the tone of commercial fit target audience's taste.Also,teenagers like listening to music by cell phone.The resound beat is exactly what they need.