Consider the following statements regarding the Carnatic composers Tyagaraja and Annamacharya:

1. Most of Tyagaraja's compositions are devoted to Lord Krishna.

2. Tyagaraja is credited with composing several new ragas of his own.

3. Tyagaraja and Annamacharya were contemporaries, active during roughly the same period.

4. Annamacharya's kirtanas are devoted mainly to Lord Venkateshwara.

Which of the statements given above are correct?