The default sampler & synthesizer plug-ins all provide arpegiator and glide functions, a cool delay and granularizer. You can easily patch mixer tracks with each other, and almost everything is template-ed/preset-able. You can record wave from your audio interface or catch MIDI signals right from your favorite controllers and assign them to the VSTs controls.
While being easy of access it's an 'all-in-one' audio environment that features multi-track-recording and arrangement, a variable pattern-length step-sequencer with an advanced song arrangement play-list, complete automation tracks, a 64+ track mixer with FX inserts, full VST plug-in support for generators and effects, great in-the-box synthesizers and effect plug-ins, like Poizone or Sytrus or the large and complete FX & sample bank provided. You will be creating wav, mp3, ogg vorbis or midi songs or loops only minutes after launching it. FL Studio is the most complete virtual studio currently available.