Please answer the following question: Information: - In music, an octave (: eighth) or perfect octave is the interval between one musical pitch and another with half or double its frequency. It is defined by ANSI as the unit of frequency level when the base of the logarithm is two. The octave relationship is a natural phenomenon that has been referred to as the "basic miracle of music", the use of which is "common in most musical systems". - The Solo Collection is a box set detailing the solo career of Freddie Mercury ; it includes the material Mercury recorded before joining up with Queen , up through the 1993 No More Brothers remixes . Mercury 's singles and two studio albums are included , as well as a disc of instrumentals , numerous rare tracks , and a set of interviews conducted by David Wigg . Also included are two DVDs : a collection of music videos , and a documentary covering Mercury 's life . - "Crazy Little Thing Called Love" is a song by the British rock band Queen. Written by Freddie Mercury in 1979, the track is featured on their 1980 album "The Game", and also appears on the band's compilation album, "Greatest Hits" in 1981. The song peaked at number two in the UK Singles Chart in 1979, and became the group's first number-one single on the "Billboard" Hot 100 in the US in 1980, remaining there for four consecutive weeks. It topped the Australian ARIA Charts for seven weeks. - "We Are the Champions" is a song by the British rock band Queen, first released on their 1977 album "News of the World". Written by lead singer Freddie Mercury, it is one of Queen's most popular songs, and one of rock's most recognisable anthems. - "Killer Queen" is a song by the British rock band Queen. It was their first big international hit, reaching number two in the UK and becoming their first US hit. Written by lead singer and pianist Freddie Mercury, the track was recorded for their third album "Sheer Heart Attack". - "Don't Stop Me Now" is a song by the British rock band Queen, featured on their 1978 album "Jazz" that was released as a single in 1979. Written by lead singer Freddie Mercury, it was recorded in August 1978 at Super Bear Studios in Berre-les-Alpes (Alpes-Maritimes), France, and is the twelfth track on the album. - Freddie Mercury (born Farrokh Bulsara; 5 September 1946 24 November 1991) was a British singer, songwriter and record producer, known as the lead vocalist and co-principal songwriter of the rock band Queen. He also became known for his flamboyant stage persona and four-octave vocal range. Mercury wrote and composed numerous hits for Queen (including "Bohemian Rhapsody", "Killer Queen", "Somebody to Love", "Don't Stop Me Now", "Crazy Little Thing Called Love", and "We Are the Champions"); occasionally served as a producer and guest musician (piano or vocals) for other artists; and concurrently led a solo career while performing with Queen. - The lead vocalist, lead vocals or lead singer in popular music is typically the member of a group or band whose voice is the most prominent in a performance where multiple voices may be heard. The lead singer either leads the vocal ensemble, or sets against the ensemble as the dominant sound. In vocal group performances, notably in soul and gospel music, and early rock and roll, the lead vocalist takes the main vocal part, with a chorus provided by other group members as backing vocalists. - "Bohemian Rhapsody" is a song by the British rock band Queen. It was written by Freddie Mercury for the band's 1975 album "A Night at the Opera". It is a six-minute suite, consisting of several sections without a chorus: an intro, a ballad segment, an operatic passage, a hard rock part and a reflective coda. The song is a more accessible take on the 1970s progressive rock genre. It was reportedly the most expensive single ever made at the time of its release, though the exact cost of production cannot be determined. After reading the paragraphs above, we are interested in knowing the entity with which 'the solo collection' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - 1980 - album - august - band - base - bear - compilation album - four - frequency - gospel - group - may - member - miracle - music - news - number - part - persona - phenomenon - principal - queen - range - relationship - rhapsody - rock - september - six - song - stage - time - two - vocal ensemble
A:
compilation album