embraces scales and melody. In November 2015, Ableton released an updated MIDI controller, the Push 2, along with Live 9.5. Push 2, in terms of its design, features a new colorful display, improved buttons and pads, and a lighter frame. Effects Most of Live's effects are already common effects in the digital signal processing world which have been adapted to fit Live's interface. They are tailored to suit Live's target audience – electronic musicians and DJs - but may also be used for other recording tasks such as processing a guitar rig. The effects featured in Ableton Live are grouped into two categories - MIDI effects and audio effects. Live is also able to host VST plugins and, on the macOS version, Audio Unit plug-ins as well as Max for Live devices since Live 9. Working with audio clips In addition to the instruments mentioned above, Live can work with samples. Live attempts to do beat analysis of the samples to find their meter, number of bars and the number of beats per minute. This makes it possible for Live to shift these samples to fit into loops that are tied into the piece's global tempo. Additionally, Live's Time Warp feature can be used to either correct or adjust beat positions in the sample. By setting warp markers to a specific point in the sample, arbitrary points in the sample can be pegged to positions in the measure. For instance a drum beat that fell 250 ms after the midpoint in measure may be adjusted so that it will be played back precisely at the midpoint. Some artists and online stores, such as The Covert Operators and Puremagnetik, now make available sample packs that are pre-adjusted, with tempo information and warp markers added. The audio files are accompanied with an "analysis file" in Live's native format (.asd files). Ableton Live also supports Audio To MIDI, which converts audio samples into a sequence of MIDI notes using three different conversion methods including conversion to Melody, Harmony, or Rhythm. Once finished, Live will create a new MIDI track containing the fresh MIDI notes along with an instrument to play back the notes. Audio to midi conversion is not always 100% accurate and may require the artist or producer to manually adjust some notes. See Fourier transform. Envelopes Almost all of the parameters in Live can be automated by envelopes which may be