The Mystery of the Lost Diamond

A sheet music adventure and game

The Lost Diamond is an engaging musical adventure where students use the included sheet music and online interactive game (split into three chapters) to solve the mystery. The investigation begins on a river path in the forest but which way will they choose to go first? Moving around the island, clues can only be revealed with music theory knowledge as fake diamonds are ruled out one by one.

Music teachers can add their own students to play this mystery

Sign up for a free teacher account to get started and follow the instructions in the Teacher Dashboard. Create a group, add your students (who automatically receive log-in details) and view a snapshot of their activity.

Learning has never been so much fun!

The Mystery of the Lost Diamond is available in a choice of two levels for piano (beginner or early elementary) and also for treble instruments like the fluteclarinet, or saxophone (woodwind with optional duet part).

‘The Wishing Tree’ from the Early Elementary Piano version

Six tunes to learn

The ‘Lost Diamond’ includes a printable sheet music book (with hidden clues!) to keep forever so you can play your favourite tunes from the mystery as many times as you like. Experience the magic of the mystical ‘Wishing Tree’ and get that campfire burning in ‘Going Camping Boogie’. The book comes in a PDF format for easy printing after checkout.

Three online chapters

Search the island using three interactive games playable on a computer, laptop, tablet or smartphone. Hike through the forest in part one, enter Bluestone Caves in part two, and finish the mystery on an abandoned pirate ship in part three. Musical detectives have six months access to the online part of the mystery (which is plenty of time to close the case).

Case Files and Suspects

Can you solve the mystery by working out the identity of the true Lost Diamond? Keep track with a handy set of Case Files. Successful investigators automatically unlock a printable certificate.

In Sophie’s last music lesson, we suddenly found ourselves in a forest. Straight ahead was a rope ladder and next to it we could make out some kind of wooden chest hidden behind overgrown flowers. We carefully moved the foliage aside and opened the lid with great trepidation …

‘Oh no!’, Sophie exclaimed, ‘the chest won’t open without a code’. Wondering what could be inside, we searched through her printed sheet music and followed the musical clues in it to work out the code. We began learning the music in readiness for opening the mysterious chest next lesson”


This music theory mystery comes in three versions; a student licence, a studio licence for music teachers or the option of setting up teaching groups. It works great during in person lessons and online teaching using platforms like Zoom or Skype. Simply open a web browser on your computer, laptop or tablet, select a chapter and play!

Susan Leigh MA LRSM LLCM FISM – Music teacher and creator of the games


Happy music teachers and students

Thank you for the welcome and for the amazing resource you have created. I am excited to try it with my students this year.

Rating: 5 out of 5.

I just love your website! I use it with all my online students. Thank you!

Rating: 5 out of 5.

Your website looks brilliant. Just the way that my pupils would engage with

Rating: 5 out of 5.

Rule out the diamonds one by one

Discover clues and hidden evidence by searching the mysterious island.

Using in music lessons

All six tunes have been composed by an experienced teacher of over twenty years.

‘The Wishing Tree’ from the Early Elementary Piano version
  • Sleepy Snakes
  • Going Camping Boogie
  • The Wishing Tree (demo below)
  • Rockin’ Around The Bat Cave
  • Pirate Dan and his Treasure Quest
  • Adventures of a Ship in a Bottle

Available for piano and other instruments

The note ranges for each instrument can be found below (some of the tunes are slightly different in each version to keep them to the correct playing level). Each sheet music score includes note values of half, 1, 2, 3 and 4 beats, dynamic signs, time signatures of 2, 3, and 4 beats in a bar, no key signatures or accidentals, simple musical terms (such as moderato, allegro), and simple musical signs (including the tie, pause, repeat signs)

01


Beginner Piano

All music is in the five finger hand position around Middle C with hands separate playing. There are a few simple two note chords in the right hand.

02


Early Elementary Piano

Hands together playing in a five finger hand position (with no stretching) but in different places on the piano. All tunes stay in one position apart from ‘The Wishing Tree’ which moves once in the left hand.

03


High Treble Instruments

This includes instruments like the flute or saxophone with all notes on the lines and spaces of the stave. There is an optional duet part for the teacher or a second player.

04


Low Treble Instruments

This version is for instruments like the clarinet with notes below the stave. The lowest note is the ledger line G below Middle C extending up the the G on the second line of the stave. There is an optional duet part for the teacher or a second player.