DastgÃÂh-e à  ur (; ) is one of the seven DastgÃÂhs of Persian Music.
Classically, Persian Music is organized into seven DastgÃÂhs and five ÃÂvÃÂzes. However, from a merely technical point of view, one can consider them as an ensemble of 12 DastgÃÂhs.
à  ur is in some respects the most important of the DastgÃÂhs. It contains a large body of pieces, and in its domain belong four important ÃÂvÃÂzes: Daà ¡ti, AbuatÃÂ, BayÃÂt-e Tork and Afà ¡ÃÂri. A great many folk tunes, from different parts of Persia, are founded on the modal schemes of à  ur or its derivative DastgÃÂhs and Guà ¡es.
The melodic formation in à  ur is conceived within the modal structure shown below for à  ur D :
The characteristics of this mode are:
In every DastgÃÂh the Forud assumes a very significant role as a unifying agent which binds together the various Guà ¡es in that DastgÃÂh. In most DastgÃÂhs, more than one Forud pattern is used.
In a à  ur Forud, the finalis may be approached by way of:
a) the 2nd below,
b) the 3rd and 2nd below,
c) the 2nd above, or
d) the 4th above.
What precedes these approaches can be brief or extensive depending on the extent of Forud improvisation. The following scores, give an average length for each of these Forud types in à  ur D:
The melodic movement of à  ur, as of all DastgÃÂhs and Guà ¡es, is overwhelmingly diatonic. No leaps larger than a perfect 4th are made. Most leaps of 4ths actually occur between the end of one phrase and the beginning of another. In other situations, an upward leap of a 4th is relatively common, from the 2nd below to the 3rd above the finalis, at the beginning of a phrase. An upward and then downward leap of a 4th is common in the Forud d as shown above. This type of ending is also used in a number of other DastgÃÂhs (e.g. HomÃÂyun and NavÃÂ). The very final portion of this Forud, which involves the leap of a 4th down, is known as BÃÂl-e Kabutar (meaning pigeon's wing in Persian) (see the score below).
Leaps of 3rds between the notes of the main tetrachord are used sparingly, generally in sequential and ornamental passages, as shown in the following score in à  ur D :
To illustrate the melodic character of à  ur, as represented by the DarÃÂmad, two different formulae for DarÃÂmads of à  ur are transcribed in the following scores in à  ur D :
These formulae, as the basis for improvisation, have been arrived at after analysis of numerous improvisations in DastgÃÂh-e à  ur. After the DarÃÂmad section, those Guà ¡es which are part of the organisation of DastgÃÂh-e à  ur are performed. A complete Radif, such as that of MusàMa'rufi contains much redundancy and several short and insignificant pieces. The present study has been concerned with larger and more singular pieces, most of which would be included in a normal but extended performance of à  ur.
The main Guà ¡es of DastgÃÂh-e à  ur are the following: Salmak, MollàNÃÂzi, Golriz, Bozorg, XÃÂrÃÂ, Qajar, OzzÃÂl, à  ahnÃÂz, QaraÃÂe, Hoseyni, BayÃÂt-e Kord and Gereyli. They may be performed in that order, but the order is by no means fixed. In a given performance of DastgÃÂh-e à  ur some of the Guà ¡es may be left out altogether, and the order of those included may also vary. This observation will hold true in all of the DastgÃÂhs. The order in which the Guà ¡es are listed and described represents, at best, the most common arrangement of the most noteworthy pieces in each DastgÃÂh.