I believe the instrument you're referring to is an ACCORDION
They have a tiny piano/keyboard looking thing on the side of them (Some do I think, if not all) or holes on them too. But there the ones you push in and out and are fairly big.
You can hit the drums, metallophones, and xylophones.
musical instruments differ in the part of the instrument that vibrates and in the way that the vibrations are made
Musical instruments are divided into families according to the way they produce sounds. String instruments produce sounds by plucking or bowing strings. Woodwind and brass instruments produce sound by blowing air into them. Sounds from percussion instruments are produced by striking on them.
carillon
Resonator
Brass,woodwinds,string and percussions are the four families of musical instruments...The fifth one is the electric family, instruments that need electricity to amplify the sound (keyboards, Electric guitars, etc.)
Musical masterpieces.
sound waves
musical instruments differ in the part of the instrument that vibrates and in the way that the vibrations are made
a box which is suppose to be banged to make musical sound
drum
Making vibrations
All Musical Instruments create sound by means of vibration. For wind instruments, the vibration derives from air passing over a mouthpiece, or from lips buzzing into a mouthpiece. For string...
Bart Hopkin has written: 'Musical Instrument Design' 'Getting a Bigger Sound' -- subject(s): Equipment and supplies, Sound, Microphone, Acoustics and physics, Musical instruments, Electronic musical instruments, Music, Audio amplifiers 'Gravikords, Whirlies & Pyrophones' 'Making simple musical instruments' -- subject(s): Musical instruments, Construction
to make the sound louder
aba! malay ko... :P
A capella
yes, if you hit your computer with them.