Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Determine the structure of this poem

### Input:
A melody of bright June
Birds gathering and singing in tune
The unbounded joy of dreams coming true
Lingering in moment and no time to lose

### Response:
This poem follows an ABCB structure, with each stanza following the pattern of lines of identical length and meter. The poem starts with a description of a summer day, the birds gathering and singing, then transitions to the imagery of dreams coming true, and ends by emphasizing the importance of seizing the moment.