Devotional songs called bhajans (written primarily from the 14th-17th centuries), kirtan (praise), and arti (a filtered down form of Vedic fire ritual) are sometimes sung in conjunction with performance of puja. This rather organic system of devotion attempts to aid the individual in connecting with God through symbolic medium. It is said, however, that the "bhakta", through a growing connection with God, is eventually able to avoid all external form and is immersed entirely in the bliss of undifferentiated Love in Truth.