Final answer:
The anthology that included 'Rikter Bedan' and four anthologies of poems and songs is called 'Samyabadi'.
Step-by-step explanation:
The publication by Nazrul that included an anthology of short stories titled Rikter Bedan, and four anthologies of poems and songs: Chittanama, Chhayanat, Samyabadi, and Puber Hawa is the Samyabadi. These works highlight the rich tapestry of Nazrul's literary contributions and reflect the deep emotional and philosophical layers within his writing. During this time, Nazrul was an influential figure in Bengali literature, and his works continue to be celebrated for their lyrical beauty and profound thematic elements.