Lot of amazing things.. in our iPhone Apples List 2010!

This is the time when.. we begin 2010, there are over 100,000 iPhone apps available for download — an overwhelming array of choices, but plenty of gems if you know where to look.

To help you out, we’ve compiled all of Mashable’sMashableMashable iPhone app reviews in a definitive list to kick off the year. From social media, to business tools, to just plain cool, the iPhone does it best with these App StoreApp Store standouts. Doesn't it?

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Free Available at Apple App Store & Leaf Trombone Lite

Smile, the developer of the well-liked Ocarina iPhone app, brought another ‘iPhone as an instrument’ application, the Leaf Trombone. Using Leaf Trombone World Stage, players can learn an instrument, perform for other users, judge others, compose and share their music. Leaf Trombone Lite & Free is for people paying attention in testing the application before purchasing it for $.99.

Leaf Trombone Lite & Free features include:

• Play the leaf trombone, either by blowing air into your microphone or just sliding the leaf
• Play game: Practice on the default track . Just follow the floating leaves on the screen.
• Observe: Witness judging of real performances by a live panel of judges by using the observe feature. If a Leaf Trombonist has Tweeted a presentation update, Twitter followers can download the app and search on the performance ID to see how their friend did.