Music Scores and Instrument Guides
Music Scores – All Instruments and Vocal

IMSLP – The International Music Score Library Project contains hundreds of thousands of music scores in the public domain which are available for anyone to download. Full scores, instrumental parts and vocal parts are available for pieces by thousands of composers.
Music By Arrangement – Free Stuff Music scores for orchestras, bands, and ensembles – specially arranged for the players that you have available. Includes easy trio arrangements which families can download and play together at home.Unchanged:
Piano

8Notes – Sheet music, licks & riffs, chord charts and general lessons. This site is mostly free, but you require a subscription to enable access to download & print arrangements of sheet music.Unchanged:
G Major Music Theory – Free piano sheet music to download, suitable for beginners and early grades.
Francesco Parrino YouTube videos and sheet music of piano arrangements from radio and movies.Unchanged:
Vocal

Sing Up Home Schooling Area – Sing Up has made available their collection of free activity resources and music to keep children and young people learning and singing outside of school. New resources will be added regularly.
Singing Exercises and Warm Ups A helpful list of useful exercises and warm-ups for you to download and print.
Woodwind and Brass
Flute Tunes – Free out of copyright Flute Music pdf, mp3 and midi files.
Percussion

Pads in Isolation With the outbreak of COVID-19, percussion students worldwide found themselves without regular ensemble rehearsals that were part of their daily lives. Pads in Isolation was composed with the idea to facilitate virtual student ensembles: find four friends that each have a pair of sticks and a practice pad, assign each player to a part, create individual video or audio recordings of each part using the click track in headphones, then piece the parts together into an ensemble using your favourite video or audio editing software.
Groove Essentials from Zildjian Kit work – grooves & styles.
Percussion Learning Materials
Practice Piece: It’s One of FOUR Things Surrey Arts percussion tutor Jason Reay has written a short piece to help tuned percussion players with their staff knowledge. The piece focuses on four things: patterns of F-A-C-E notes; patterns of E-G-B-D-F notes; neighbouring notes (moving by alphabetic step); octave leaps.
Guitar

Guitar Down Under Free sheet music and arrangements.
Guitar Free Scores Free sheet music and arrangements.
Instrument Manufacture and Maintenance
A selection of videos showing how different instruments are made, along with guies to help you care for your instrument.
Jupiter A good selection of information about all instruments in the Jupiter range, including some care guides.
Matt Stohrer – saxophone repair
The Violin Channel A lot of interesting information about violinists worldwide together with useful info and links to professional repair and restoration.
Martin Guitars Great factory tours and in depth info.