Question: Opeth is a Swedish heavy metal band from Stockholm, formed in 1989. The group has been through several personnel changes, but lead vocalist, guitarist and songwriter Mikael Akerfeldt has remained Opeth's primary driving force throughout the years. Opeth has consistently incorporated progressive, folk, blues, classical and jazz influences into its usually lengthy compositions, as well as strong influences from death metal, especially in their early works. Many songs include acoustic guitar passages and strong dynamic shifts, as well as both death growls and clean vocals.

Opeth was formed as a death metal band in 1989 in Stockholm, Sweden, by lead vocalist David Isberg. Isberg asked former Eruption band member Mikael Akerfeldt (just 16 years old at the time) to join Opeth as a bassist. When Akerfeldt showed up to practice on the day after Isberg invited him, it became clear that Isberg had not told the band members, including the band's current bassist, that Akerfeldt would be joining. An ensuing argument led to all members but Isberg and Akerfeldt leaving to form a new project. The band name was derived from the word "Opet", taken from the Wilbur Smith novel The Sunbird. In this novel, Opet is the name of a fictional Phoenician city in South Africa translated as "City of the Moon". Isberg and Akerfeldt recruited drummer Anders Nordin, bassist Nick Doring, and guitarist Andreas Dimeo. Unsatisfied with Opeth's slow progress, Doring and Dimeo left the band after their first performance, and were replaced by guitarist Kim Pettersson and bassist Johan De Farfalla. After the next show, De Farfalla left Opeth to spend time with his girlfriend in Germany, and was initially replaced by Mattias Ander, before Akerfeldt's friend Peter Lindgren took on the role of bassist. Rhythm guitarist Kim Pettersson left following the band's next performance, and Lindgren switched to guitar, with the role of bassist falling to Stefan Guteklint. The following year, David Isberg left the band citing "creative differences". Following Isberg's departure, Akerfeldt took over vocal duties and he, Lindgren, and Nordin spent the next year writing and rehearsing new material. The group began to rely less on the blast beats and aggression typical of death metal, and incorporated acoustic guitars and guitar harmonies into their music; developing the core sound of Opeth. Bassist Guteklint was dismissed by the band after they signed their first record deal with Candlelight Records in 1994. Opeth initially employed former member De Farfalla as a session bassist for their demo recordings, and he went on to join on a full-time basis following the release of Opeth's debut album, "Orchid", in 1995.

Using a quote from the above article, answer the following question: How many albums did this band put out as a whole?
HHHHHH
Answer:

Problem: The Tlingit language (English: , ; Tlingit: Lingit [linkit]) is spoken by the Tlingit people of Southeast Alaska and Western Canada. It is a branch of the Na-Dene language family. Extensive effort is being put into revitalization programs in Southeast Alaska to revive and preserve the Tlingit language and culture. Missionaries of the Russian Orthodox Church were the first to develop a written version of Tlingit, using the Cyrillic script to record and translate it, when the Russian Empire had contact with Alaska and the coast of North America down to Sonoma County, California.

Tlingit has eight vowels, four vowels further distinguished formally by length. However, the length distinction is often in terms of tenseness rather than length, particularly in rapid speech. For the Northern dialect, the dominant spoken dialect of Tlingit and the standard for written Tlingit, every vowel may take either high or low tone; in the orthography high tone is indicated by an acute accent, e.g. aa, and low tone is unmarked, e.g. aa. The Southern and Transitional dialects have a mid tone which is unmarked and additional low tone which is marked by a grave accent, e.g. aa. As noted in the vowel chart above, there is an allophone of /a:/ (orthographic aa) which is realized as [a:] under the influence of uvular consonants, however this is not consistent for all speakers. The backness influence arises from articulation with uvular consonants, thus the word khaa "person" is often spoken as [qha:], whereas the word (a) kaa "on (its) surface" is said as [(?^) kha:] by the same speakers. Word onset is always consonantal in Tlingit, i.e. no word may begin with a vowel. Where one would occur theoretically by e.g. prefixing or compounding, the vowel is obligatorily preceded by either [?] or [j]. The former is universal in single words, and the latter is found varying with [?] in word-medial position in compounds. The orthography does not reflect the [?] in word-initial position, but either . or y may be seen in medial position. For example, the word khoowat'aa "the weather is hot" (khu-yu-ya-t'aa, INDH.OBJ-PERF-(0, -D, +I)-hot) is phonetically [qhu:w^t'a:], but when the perfective prefix yu- is word initial in uwat'aa "it is hot" (0-yu-ya-t'aa, 3NEU.OBJ-PERF-(0, -D, +I)-hot) the phonetic form is [?Uw^t'a:] where the glottal stop appears to ensure that the word begins with a consonant.

what do you mean by tones?

Answer with quotes:
every vowel may take either high or low tone; in the orthography high tone is indicated by an acute accent, e.