The Hartley Violin, the one Wallace Hartley possibly played on that fateful voyage, is on its American tour. Right now it is at Titanic Pigeon Forge through 27 Jul. Then goes over to Titanic Branson where it will be on display in August 1-15. Reservations are required and there is a daily vip tour (limited to 25 people). Usually they prohibit any cameras or videos of items exhibited but they are allowing people attending to take photos of the violin.
Source: Long Lost Titanic Violin In Branson(press release)(23 Jul 2013,PR Web)