Drum Cloud is an free audio app that hybrids between a drum machine (sampler) and a simple sequencer.

Have you ever wanted to create some sick dubstep beats? Here is your chance!

Piano keyboard that plays cat sounds.
Shake the device to change sound.

Touch screen / accelerometer Synthesizer. Various instruments including sampler, harmonizer , touchpad / keyboard mode and adjustable effects. Use headphones for best results.

For your choice proposed a very pure tuner for acoustic and bass guitar. Try it!

Guitar Simulator - Acoustic and Electric
Learn the notes of a 22 fret guitar with audio.
6 string in standard guitar tuning plus
Open D , Open E, Open A, Open G, Drop D, Open C6 (Zepp)
BEBEBE & CGCFCE with capo. .

2 sets of guitare sounds - Acoustic and Electric

9 Guitar Fretboards in all - switch from acoustic to electric.
Easy to use great for beginners.
Scrollable neck with lock .

Great for learning acoustic guitare notes.

Bass Guitar Simulator - Fretboard map .
Learn the notes of a 22 fret bass guitar with audio.
4 & 5 string in standard bass guitar tuning.
Touch to play - virtual bass guitar.
Interactive bass guitar reference.
Easy to use great for beginners.
Scrollable neck with lock .
4 sets for sounds - Punk, new wave, studio, finger sound.

Great for working bass guitar lines.

CIRCLE OF 5THS - Song writing tools.
Interactive reference & composition aid .
Touch to play - Audio.
Create chord progressions.
Major, minor, seventh, ninth and suspended chords.

This application shows chords belonging to each tonality.

New Musical Instrument in which you can select the number of notes per octave.

Connect your phone or tablet to MIDI device with OTG Cable and turn it to a MIDI Drum Pad

The Smart Synthesizer is a simple and fun synth for Android devices.

Tabla Drums - The best Tabla for Android™

Phone and Tablet Drums is a simple drum machine app with a record and playback capability. Four drum sets and random sounds effects.