AppAdvice has once again teamed up with IK Multimedia in order to offer you a chance to win one of five promo codes for SampleTank ($19.99) for iPad, iPhone, and iPod touch.

Logically introduced alongside the iRig MIDI, SampleTank gives your MIDI controller, such as drum pads or a keyboard, the power to be a grand piano, organ, flute, saxophone, bongos, or even create vocals and DJ beats with synthesizing capabilities. SampleTank includes 16 different instrument categories and hundreds of different mixes.

Play each instrument using your physical MIDI controller, the iRig KEYS, the built-in soft keyboard, or digital pads. The integrated keyboard can be played in a dual row configuration for access to more keys simultaneously or in the single row Edit mode. In this customization mode, no matter which instrument, you can modify general parameters: volume, attack, resonance, cutoff, release, and more. Both configurations also offer a keyboard row lock and optional mix selection keys. When enabled, they appear on the left in a red tint.

In addition, SampleTank features a metronome for recording with BPM adjustment, 4-track recorder with export, playback and record controls in every mode, and built-in keyboard preferences like key size and scale.

If you’d like to have additional details and a personal perspective, try it out for yourself by downloading SampleTank Free.

To have a chance at winning one of two SampleTank promo codes, just hit that tweet button near the bottom of this page or retweet this post from your favorite Twitter app before Oct. 28 at 11:59 p.m. PDT. We will then search the Twitterverse for all of the retweets and randomly choose our lucky winners. The winners will be notified via Twitter, so please be sure to follow us so we can send you your promo code via a direct message.

Non-Twitter users and those of you who want to increase your odds of winning can leave a relevant comment below before 11:59 p.m. PDT tomorrow to have a chance at winning one of the other three SampleTank promo codes. If you do make an entry via the comments area, please be sure to also check your junk email boxes so that you won’t miss out if you win.

Feel free to participate in the giveaway via either or both methods. Only one entry per person per method is allowed, totaling up to two entries per person if using both.