Complex sentence: Milan started his career taking part in musical contest Zvezde Granda, where he became a favorite of the audience (SMS votes put him in the first place in 12 out of 14 contest shows).
Split into simpler sentences: Milan started his career taking part in musical contest Zvezde Granda. Soon he becomes an absolute favorite of the audience (SMS votes put him in the first place in 12 out of 14 contest shows).