rhapsodize

Short definition from Wiktionary

Verb

1. 1
   To speak with exaggerated or rapturous enthusiasm (about, (up)on or over something).
2. 2
   To say (something) with exaggerated or rapturous enthusiasm.
3. 3
   To recount or describe (something) as a rhapsody, or in the manner of a rhapsody.
4. 4
   To perform a rhapsody.