योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-59, verse-5

सिद्धविद्याधरोन्मुक्तपुष्पवर्षसहस्रभृत् ।
ध्वनन्मृदङ्गमुरजकाहलाशङ्खदुन्दुभि ॥ ५ ॥

siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt ,
dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi 5

5. siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt
dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi

5. siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt
dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi

5. It bore countless showers of flowers released by perfected beings (siddhas) and celestial Vidyadharas, and it resounded with the sounds of mṛdaṅga drums, muraja drums, kāhalā trumpets, conch shells, and dundubhi drums.

Words meanings summery:

• सिद्धविद्याधरोन्मुक्तपुष्पवर्षसहस्रभृत् (siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt) - The palace was experiencing a continuous showering of flowers from celestial beings, a sign of great celebration. (bearing countless showers of flowers released by Siddhas and Vidyadharas)

• ध्वनन्मृदङ्गमुरजकाहलाशङ्खदुन्दुभि (dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi) - The palace was filled with the powerful and varied sounds of a large ensemble of traditional musical instruments. (resounding with mṛdaṅga, muraja, kāhalā, conch, and dundubhi sounds)

Words meanings and morphology

सिद्धविद्याधरोन्मुक्तपुष्पवर्षसहस्रभृत् (siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt) - The palace was experiencing a continuous showering of flowers from celestial beings, a sign of great celebration. (bearing countless showers of flowers released by Siddhas and Vidyadharas)

(adjective)

Nominative, neuter, singular of siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt

siddhavidyādharonmuktapuṣpavarṣasahasrabhṛt - bearing countless showers of flowers released by Siddhas and Vidyadharas

Compound type : bahuvrihi (siddha+vidyādhara+unmukta+puṣpavarṣa+sahasra+bhṛt)

• siddha – perfected being, accomplished one, demi-god
  noun (masculine)
  Past Passive Participle
  From root sidh (to accomplish, succeed) + kta suffix.
  Root: sidh (class 4)
• vidyādhara – knowledge-holder, a class of celestial beings with magical powers
  noun (masculine)
• unmukta – released, discharged, showered
  adjective (masculine)
  Past Passive Particulations
  From upasarga ud + root muc (to release) + kta suffix.
  Prefix: ud
  Root: muc (class 6)
• puṣpavarṣa – flower-rain, shower of flowers
  noun (neuter)
• sahasra – thousand, innumerable
  noun (neuter)
• bhṛt – bearing, holding, supporting
  adjective (masculine)
  Kṛt suffix
  From root bhṛ (to bear, support) + kvip suffix.
  Root: bhṛ (class 3)

Note: Adjective modifying rājasadanam.

ध्वनन्मृदङ्गमुरजकाहलाशङ्खदुन्दुभि (dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi) - The palace was filled with the powerful and varied sounds of a large ensemble of traditional musical instruments. (resounding with mṛdaṅga, muraja, kāhalā, conch, and dundubhi sounds)

(adjective)

Nominative, neuter, singular of dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi

dhvananmṛdaṅgamurajakāhalāśaṅkhadundubhi - resounding with mṛdaṅga, muraja, kāhalā, conch, and dundubhi sounds

Compound type : tatpurusha (dhvanat+mṛdaṅga+muraja+kāhalā+śaṅkha+dundubhi)

• dhvanat – resounding, making sound, noisy
  adjective (masculine)
  Present Active Participle
  From root dhvan (to sound) + śatṛ suffix.
  Root: dhvan (class 1)
• mṛdaṅga – a type of double-headed drum
  noun (masculine)
• muraja – a type of drum, usually cylindrical
  noun (masculine)
• kāhalā – a type of large trumpet or horn
  noun (feminine)
• śaṅkha – conch shell, trumpet made from conch
  noun (masculine)
• dundubhi – a large drum, war-drum
  noun (masculine)

Note: Adjective modifying rājasadanam.