Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Sonivox Big Bang - Universal Drums - Virtual Instrument Software
Product description: Introducing the most bangable drums in the universe, Big Bang - Universal Drums! Whether your drum needs are pop, hip-hop, world, funk, rock, or anything else, use these Banging' Drums and watch your tracks blow up!
Product feature: Deeply Sampled Custom Made SJC Drum Kit, All programs are multi-velocity, and multi-take round robin for the utmost in realism, SONiVOX's Intelligent Rhythm Control (I.R.C.) technology, Sticks and Brushes Performance Patches, Bonus Ethnic and Orchestral Percussion Patches
Product brand: Akai Professional
Target attributes: Media Type
Answer: attribute: media type
value: your tracks
source: product description
attribute: media type
value: drums
source: product title
attribute: media type
value: instrument
source: product title
attribute: media type
value: drum
source: product feature