Find refills of Indian sounds. Some of the best-known Indian-flavored Reason refills are Insane Guitar Tools' "Insane Sitar," collection; Sonic Reality's Reason 3 Refills Vol. 13: World Percussion disc; and Pandit Dinesh's "Pukka Masala" collection of percussion, instrument licks, atmospheres and vocals.
Open Reason and put your new Indian instrument samples into the appropriate Reason folders. You can place it in the My Documents"folder, for example, like this: C/My Documents/Music Tools/Reason 6/refills.
Right-click on the blank space under the racks displayed in Reason.
Click on Create Instrument. Browse the refill packages until your Indian refills appear. Remember that the devices will only show material that's compatible with them, so browsing with the Subtractor won't show NN-XT patches, for example.