Vulnerable and disabled children have been robbed of their musical instruments by heartless thieves.

A trailer filled with $30,000 worth of guitars, speakers and drums was stolen from Music Rocks Australia in Perth on Tuesday night.

Unknown thieves drove the trailer through the fence before clearing out its contents and dumping it at a beach just 3km away, according to 9News.

More than 30 musical instruments and pieces of equipment for nearly 2,000 students were taken during the targeted attack.

'With what we do, we need the vehicles and equipment to be able to reach the children,' Founder and Director of Music Rocks Australia, Dean Blanchard, told Daily Mail Australia.

'Routine is huge for kids with a disability, it's important we can continue to get the music to them rather than making them come to us,' he said.

Rest assured, the show will go on, Mr Blanchard insisted.

'Music Rocks will roll as usual for everyone! That's who we are rain, hail, shine or criminal theft!' Mr Blanchard wrote on Music Rocks Australia's Facebook page following the robbery.

Staff have been forced to bring in their own equipment to keep the business running.

Community members also donated items to the school.

Anyone living in the area has been urged to keep an eye on Buy/Swap/Sell pages and popular sites like Gumtree and Ebay for anyone selling the stolen goods.

The incident has since been reported to the Police.