Between apps such as Best Electric Guitar that draw from the sampled sounds of real instruments to those such as RD4-Groovebox that emulate classic synths or create new ones, smartphone-based studio tools help you build parts or all of new songs. Some apps, such as SPC-Music Sketchpad 2, focus on sampling and sequencing electronic music, whereas others, such as S Sequencer, encourage you to explore and develop new sounds. Along with melodic instrumentation, smartphone apps such as GrooveMixer and Dubstep Creator also enable you to build drum and percussion parts, create drum-machine sounds inspired by famous beat boxes and other electronic gear, and anchor your tunes with a solid bottom end backed by bass lines. Choose an app such as Best Composer to access a pad-style interface through which to build your own samples and songs on a button-based sketchpad.
