DP Music: Music Research

• Directory of Open Access Books
• Library of Congress
• Music and Dance Online (valid until October 7th)
• National Anthems.info
• OAPEN (Open Access Books)
• World Music Network

• Choral Wiki
• IMSLP Petrucci Music Library
• Naxos Music Library

• BBC Music Features and reviews of over 120 new classical works in every issue.
• Computer Music Create great music with a PC or Mac. Easy-to-follow tutorials for all sorts of music software, unbiased reviews of the latest products and answers to technical questions.
• Electronic Musician For anyone the makes, plays, and/or shares music
• Gramophone Classical music magazine
• Guitar Player Lessons and master classes, interviews with top artists, recording tips, and extensive product reviews.
• Guitar Techniques For those wanting to improve their technique
• Guitar World Interviews that cover technique, instruments, & lifestyle and lessons and transcriptions
• Guitarist Gear reviews, interviews, technique lessons and advice
• International Piano Inspiration and guidance in piano
• MOJO Celebrates all time greats and also features new artists
• Pianist Play like an expert! Notes on technique, pedalling and interpretation, sheet music reviews, Q&As, teaching tips, in-depth ‘How to Play’ masterclasses, readers’ letters, piano news, interviews with top concert pianists and music scores.
• Songlines World music magazine (music and culture)
• Sound On (UK) (USA) Recording Technology
• Uncut Interviews, album reviews

Effective Use of Wikipedia 

SKIM & SCAN...

• Left side: Content sub-pages to jump to topics
• Right side: Context and Overview
• Headings
• Images & Captions

Follow the SOURCES:

• Follow the sources (citations in footnotes)
• Read laterally to check accuracy and identity bias of sources

GET IDEAS:

• Gain background knowledge, narrow your topic
• View the backchannel to see if there's any controversy about the topic
• Need a topic? Browse the Portal (how long can you surf?)

RULES:

• NEVER cite a wikipedia page as a source. Instead, find the information you want to use on the page and follow the source citation - cite THAT instead.
• Check the source for accuracy and to identify the bias. Read LATERALLY to find out about the source. The sources you choose are YOUR responsibility, so check!

More details and examples