Thanks guys for the valuable answers.
Now the situation is slightly changed. I put both "In particular" and "Particularly" in the beginning of a sentence.
1. In particular, I love pop music.
2. Particularly, I love pop music.
Is there any difference between the above sentences? I raise the question because a when I used "In particular" a friend of mine who is a native speaker suggested that I should change to "Particularly".
Cheers,
Vu