No doubt Garageband is an Awesome software that has Audio recording, Guitar features, MDI editing to Music lessons. [Wiki]
Thankfully there are alternatives available to Mac’s GarageBand for Windows, have a look at them.
LMMS Made by musicians, for musicians. LMMS previously (Linux MultiMedia Studio) is a free digital audio workstation Software and is also available for Linux and MAC, allows you to Sequence, compose, mix and automate and edit songs in one simple interface. LMMS is one of the best alternative to Garageband.
FL Studio ($99 with free trial) is a complete software music production environment or DAW (Digital Audio Workstation).
FL Studio allows you to create music by choosing which beats you want to use and at what type.
It also allows you to create multiple beats and then have them together.
Stagelight ( $9.99 Trial available ) From Openlabs, lets you Easily Create and Share Music, you can directly upload your music to sound cloud, you have to option to select genre the type of music you want to create like Hip Hop, Pop, rock etc.
Stagelight is the easiest and best way to create, share and play with music on Windows mobile and desktop devices. Stagelight comes with built-in lessons, sounds, instruments, loops, effects and much, much more.
StudioOne By Presonus comes in 4 different versions Studio One Free, Studio One for Artist, Studio One for Producer, Studio One Professional.
Studio One Free for beginners allows you to record digital audi, includes unlimited track count and several audio processing plugins.
Studio One Artist is for musicians who need basic recording features.
Studio One Producer have all the features from Studio One Artist, additionally supports ReWire and AU/VST plug-ins, MP3 import and export, with additional third-party content.
Studio One Professional is for professional-level music production having features like multitracking audio and MIDI recording. Including video playback and synchronization, pitch correction.
Studio One has the audio effects like dynamics, delay, guitar amp modeling, master effects, equalization, modulation, metering, and diagnostics. It has four virtual instruments: Impact (drum sampler), Mojito (monophonic bass synth), Presence (which can play back SoundFont sounds), and Sample One (sampler) [Wiki].