Need Help With Custom Theme

Hello,

I have Created a custom Theme for a website now I have added 5 pages. I know I can put different content and Images from the backend, Can any one tell me how can i put a images gallery on the pages with specific images on different pages
Eg: If i have a page for music the slider will show music related gallery.
if i have a technology page then the slider will show tech related images.

Now this slider i dont want to copy past HTMl and change Image path.Is There any way that I can use a plugin for image gallery and some how show different on diferent pages

Please Help
Thanks in advance