Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Tanglewood Lightweight 60W Acoustic Guitar Combo Amp with Single 8-Inch Speaker (T6)
Product description: The T6 is a Lightweight 60W Acoustic Guitar Combo Amp with single 8-Inch Speaker. Features 2 channels and is as adept at handling vocals as it is guitar, making it a perfect on-stage companion for singer/songwriters and gigging guitarists. With four effect presets (2 Reverbs, Chrous, Delay) and speaker pole socket. Includes Gig Bag.
Product feature: Acoustic Amp, 8 inch Speaker, 2 channels
Product brand: Tanglewood
Target attributes: Total Wattage
Answer: attribute: total wattage
value: 60w
source: product title
attribute: total wattage
value: 60w
source: product description